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Mohamed MA, Abouzied AS, Reyad A, Sayed Abdelsalam Zaki ME, Abdelgawad FE, Al-Humaidi JY, Gomha SM. Novel terpyridines as Staphylococcus aureus gyrase inhibitors: efficient synthesis and antibacterial assessment via solvent-drop grinding. Future Med Chem 2024; 16:205-220. [PMID: 38230640 DOI: 10.4155/fmc-2023-0278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 11/28/2023] [Indexed: 01/18/2024] Open
Abstract
Aim: This study was designed to synthesize a novel series of terpyridines with potential antibacterial properties, targeting multidrug resistance. Materials & methods: Terpyridines (4a-h and 6a-c) were synthesized via a one-pot multicomponent reaction using 2,6-diacetylpyridines, benzaldehyde derivatives and malononitrile or ethyl 2-cyanoacetate. The reactions, conducted under grinding conditions with glacial acetic acid, produced high-yield compounds, confirmed by spectroscopic data. Results: The synthesized terpyridines exhibited potent antibacterial activity. Notably, compounds 4d and 4h demonstrated significant inhibition zones against Staphylococcus aureus and Bacillus subtilis, outperforming ciprofloxacin. Conclusion: Molecular docking studies highlighted compounds 4d, 4h and 6c as having strong binding affinity to DNA gyrase B, correlating with their robust antibacterial activity, suggesting their potential as effective agents against multidrug-resistant bacterial strains.
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Affiliation(s)
- Mahmoud Abdalla Mohamed
- Technology of Textile Department, Faculty of Technology and Education, Beni-Suef University, Beni-Suef, Egypt
- Chemistry Department, Faculty of Science and Humanity study, Afif, Shaqra University, Saudi Arabia
| | - Amr Salah Abouzied
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail, 81442, Saudi Arabia
- Department of Pharmaceutical Chemistry, National Organization for Drug Control & Research, Giza, 12311, Egypt
| | - Amany Reyad
- Botany Department, Faculty of Science, Fayoum University, Fayoum, 63514, Egypt
| | | | - Fathy Elsayed Abdelgawad
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia
| | - Jehan Yahya Al-Humaidi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh 11671, Saudi Arabia
| | - Sobhi Mohamed Gomha
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
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2
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Yan J, Qu ZH, Zhou DY, Yiu SM, Qin Y, Zhou X, Liao LS, Chi Y. Bis-tridentate Ir(III) Phosphors and Blue Hyperphosphorescence with Suppressed Efficiency Roll-Off at High Brightness. ACS APPLIED MATERIALS & INTERFACES 2024; 16:3809-3818. [PMID: 38211320 DOI: 10.1021/acsami.3c16260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Narrowband blue emitters are indispensable in achieving ultrahigh-definition OLED displays that satisfy the stringent BT 2020 standard. Hereby, a series of bis-tridentate Ir(III) complexes bearing electron-deficient imidazo[4,5-b]pyridin-2-ylidene carbene coordination fragments and 2,6-diaryloxy pyridine ancillary groups were designed and synthesized. They exhibited deep blue emission with quantum yields of up to 89% and a radiative lifetime of 0.71 μs in the DPEPO host matrix, indicating both the high efficiency and excellent energy transfer process from the host to dopant. The OLED based on Irtb1 showed an emission at 468 nm with a maximum external quantum efficiency (EQE) of 22.7%. Moreover, the hyper-OLED with Irtb1 as a sensitizer for transferring energy to terminal emitter v-DABNA exhibited a narrowband blue emission at 472 nm and full width at half-maximum (FWHM) of 24 nm, a maximum EQE of 23.5%, and EQEs of 19.7, 16.1, and 12.9% at a practical brightness of 100, 1000, and 5000 cd/m2, respectively.
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Affiliation(s)
- Jie Yan
- Department of Chemistry, Department of Materials Science and Engineering, and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Zhi-Hao Qu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215006, China
| | - Dong-Ying Zhou
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215006, China
| | - Shek-Man Yiu
- Department of Chemistry, Department of Materials Science and Engineering, and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Yanyan Qin
- Department of Chemistry, Department of Materials Science and Engineering, and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon 999077, Hong Kong
| | - Xiuwen Zhou
- School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Liang-Sheng Liao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215006, China
| | - Yun Chi
- Department of Chemistry, Department of Materials Science and Engineering, and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon 999077, Hong Kong
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3
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Hegarty IN, Henwood AF, Bradberry SJ, Gunnlaugsson T. Generating water/MeOH-soluble and luminescent polymers by grafting 2,6-bis(1,2,3-triazol-4-yl)pyridine (btp) ligands onto a poly(ethylene- alt-maleic anhydride) polymer and cross-linking with terbium(III). Org Biomol Chem 2023; 21:1549-1557. [PMID: 36723129 DOI: 10.1039/d2ob02259a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The synthesis of two new polymers made from P(E-alt-MA) (poly(ethylene-alt-maleic anhydride) and possessing 2,6-bis(1,2,3-triazol-4-yl)pyridine (btp) ligand side chains in 3 and 6 mol%, respectively (P1 and P2, respectively) is described. These polymers were shown to be soluble in MeOH solution and, in the case of P1, also in water, while P2 needed prolonged heating to enable water dissolution. Btp ligands are known for coordinating both d- and f-metal ions and so, herein, we demonstrate by using both UV-Vis absorption, fluorescence emission, as well as time-gated phosphorescence spectroscopies, that both P1 and P2 can bind to Tb(III) ions to give rise to luminescent polymers. From the analysis of the titration data, which demonstrated large changes in the emission intensity properties of the polymer upon Tb(III) binding (ground state changes were also clearly observed, with the absorption being red-shifted at lower energy), we show that the dominant stoichiometry in solution is 1 : 2 (M : L; Tb(III) : btp ratio) which implies that two btp ligands from the polymer background are able to crosslink through lanthanide coordination and that the backbone of the polymer is very likely to aid in coordinating the ions.
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Affiliation(s)
- Isabel N Hegarty
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - Adam F Henwood
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,Synthesis and Solid-State Pharmaceutical Centre (SSPC), School of Chemistry, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Samuel J Bradberry
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,Synthesis and Solid-State Pharmaceutical Centre (SSPC), School of Chemistry, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
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4
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David AHG, Goodwin RJ, White NG. Supramolecular chemistry of two new bis(1,2,3-triazolyl)pyridine macrocycles: metal complexation, self-assembly and anion binding. Dalton Trans 2023; 52:1902-1912. [PMID: 36722436 DOI: 10.1039/d2dt03985k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Two new macrocycles containing the bis(1,2,3-triazolyl)pyridine (btp) motif were prepared in high yields from a btp diazide precursor (1). Solution 1H NMR studies show that this diazide undergoes self-assembly with divalent transition metal ions to form ML2 complexes with pendant azide groups, apparently suitable for conversion into metal-templated catenanes; however attempts to form these catenanes were unsuccessful. Instead a new macrocycle containing two btp motifs was prepared, which forms a nanotube structure in the solid state. Reduction of the azide groups to amines followed by amide bond formation was used to convert 1 into macrocycle 8 containing btp and isophthalamide functionalities. This macrocycle binds halide and oxalate anions in acetonitrile solely through the isophthalamide motif, and binds aromatic dicarboxylates very strongly through both the isophthalamide amide donors and the btp triazole donors. The macrocycle was complexed with Pd(II) and the resulting complexes were shown to bind strongly to halide anions. The solid state structures of [Pd·8·X]BF4 (X = Cl-, Br-, I-) were investigated by X-ray crystallography, which showed that [Pd·8·Br] forms an unusual "chain of dimers" structure assembled by metal complexation, N-H⋯Br- hydrogen bonding and short Pd⋯Pd contacts.
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Affiliation(s)
- Arthur H G David
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia. .,Institut des Sciences Chimiques de Rennes, Université de Rennes 1, 35042, Rennes, France
| | - Rosemary J Goodwin
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia.
| | - Nicholas G White
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia.
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5
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Luo C, Cai M, Zhao R, Huang B. An efficient and practical synthesis of functionalized pyridines via recyclable copper-catalyzed three-component tandem cyclization. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2022.2156296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Chengkai Luo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Mingzhong Cai
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Ruonan Zhao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Bin Huang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
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6
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Saha P, Basak D, Biswas S, More PA, Madhavan N. Small Peptidic Ionophore for Calcium Transport. Bioconjug Chem 2022; 33:2143-2148. [DOI: 10.1021/acs.bioconjchem.2c00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Parichita Saha
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Debajyoti Basak
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
| | - Sayantan Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Priyanka A. More
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Nandita Madhavan
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
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7
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Multi-Biofunctional Silver-Containing Metallosupramolecular Nanogels for Efficient Antibacterial Treatment and Selective Anticancer Therapy. Acta Biomater 2022; 151:576-587. [PMID: 35933102 DOI: 10.1016/j.actbio.2022.07.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 07/22/2022] [Accepted: 07/29/2022] [Indexed: 11/23/2022]
Abstract
We develop a simple and efficient route for the fabrication of water-soluble metallosupramolecular polymers. We demonstrate that the introduction of environment-responsive metal-organic complexes within supramolecular polymers endows the resulting self-assembled nano-objects with outstanding antibacterial activity and may significantly improve the efficacy and safety of selective cancer therapy. Herein, we successfully developed a silver-containing supramolecular polymer (Ag-Cy-J) possessing a hydrophilic Jeffamine backbone and highly sensitive pH-responsive cytosine-silver-cytosine (Cy-Ag-Cy) linkages, which spontaneously self-assemble to produce sterically stabilized spherical nanogels in water. The resulting nanogels exhibit several attractive features such as unique fluorescence behavior in water, highly stable self-assembled structures in biological media, significant antihemolytic capability, highly sensitive pH-responsiveness and broad-spectrum antibacterial activity against various bacteria strains. Importantly, in vitro cellular assays clearly demonstrated Ag-Cy-J nanogels highly selectively target and induce cytotoxicity in cancer cells, without affecting normal cells. The selective cytotoxic activity in cancer cells is attributed to rapid dissociation of the Cy-Ag-Cy complexes within the nanogels in the cancer cell microenvironment, followed by the intracellular release of silver ions and induction of rapid, massive apoptosis. Overall, the pH-sensitive Cy-Ag-Cy complexes within this supramolecular nanogel system may provide a route to remarkably improve the efficacy of both antibacterial and cancer drug therapies. STATEMENT OF SIGNIFICANCE: : We present a significant breakthrough in the development of a water-soluble silver-containing metallosupramolecular polymer (Ag-Cy-J) that spontaneously self-assembles in water into a spherical nanogel with unique physical characteristics due to the existence of highly sensitive pH-responsive cytosine-silver-cytosine (Cy-Ag-Cy) linkages within the nanogels. Importantly, a series of in vitro antibacterial and anticancer assays demonstrated the Ag-Cy-J nanogels not only exert strong antibacterial activity against various bacterial strains, but also exhibit a high degree of selective uptake and rapidly induce massive apoptosis in cancer cells without harming normal cells. Thus, this newly discovered supramolecular system may potentially provide a multi-biofunctional soft nanomaterial for efficient and safe antibacterial and cancer therapies.
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8
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Vasilenko DA, Dronov SE, Grishin YK, Averina EB. An Efficient Access to 5‐(1,2,3‐triazol‐1‐yl)isoxazoles – previously unknown structural type of triazole‐isoxazole hybrid molecule. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dmitry A. Vasilenko
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Chemistry Department Leninskie Gory, 1-3 119991 Moscow RUSSIAN FEDERATION
| | - Sevastian E. Dronov
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Chemistry Department Leninskie Gory, 1-3 119991 Moscow RUSSIAN FEDERATION
| | - Yuri K. Grishin
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Chemistry Department Leninskie Gory, 1-3 119991 Moscow RUSSIAN FEDERATION
| | - Elena B. Averina
- Lomonosov Moscow State University: Moskovskij gosudarstvennyj universitet imeni M V Lomonosova Department of Chemistry Leninskie Gory-1-3Not Available 119991 Moscow RUSSIAN FEDERATION
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9
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Wojtczak K, Byrne JP. Structural considerations for building synthetic glycoconjugates as inhibitors for Pseudomonas aeruginosa lectins. ChemMedChem 2022; 17:e202200081. [PMID: 35426976 PMCID: PMC9321714 DOI: 10.1002/cmdc.202200081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/13/2022] [Indexed: 11/16/2022]
Abstract
Pseudomonas aeruginosa is a pathogenic bacterium, responsible for a large portion of nosocomial infections globally and designated as critical priority by the World Health Organisation. Its characteristic carbohydrate‐binding proteins LecA and LecB, which play a role in biofilm‐formation and lung‐infection, can be targeted by glycoconjugates. Here we review the wide range of inhibitors for these proteins (136 references), highlighting structural features and which impact binding affinity and/or therapeutic effects, including carbohydrate selection; linker length and rigidity; and scaffold topology, particularly for multivalent candidates. We also discuss emerging therapeutic strategies, which build on targeting of LecA and LecB, such as anti‐biofilm activity, anti‐adhesion and drug‐delivery, with promising prospects for medicinal chemistry.
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Affiliation(s)
- Karolina Wojtczak
- National University of Ireland Galway School of Biological and Chemical Sciences University Road H91 TK33 Galway IRELAND
| | - Joseph Peter Byrne
- National University of Ireland Galway School of Chemistry University Road H91 TK33 Galway IRELAND
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10
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Jankovič D, Virant M, Gazvoda M. Copper-Catalyzed Azide-Alkyne Cycloaddition of Hydrazoic Acid Formed In Situ from Sodium Azide Affords 4-Monosubstituted-1,2,3-Triazoles. J Org Chem 2022; 87:4018-4028. [PMID: 35148087 PMCID: PMC8938953 DOI: 10.1021/acs.joc.1c02775] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Indexed: 12/23/2022]
Abstract
We report a copper-catalyzed cycloaddition of hydrogen azide (hydrazoic acid, HN3) with terminal alkynes to form 4-substituted-1H-1,2,3-triazoles in a sustainable manner. Hydrazoic acid was formed in situ from sodium azide under acidic conditions to react with terminal alkynes in a copper-catalyzed reaction. Using polydentate N-donor chelating ligands and mild organic acids, the reactions were realized to proceed at room temperature under aerobic conditions in a methanol-water mixture and with 5 mol % catalyst loadings to afford 4-substituted-1,2,3-triazoles in high yields. This method is amenable on a wide range of alkyne substrates, including unprotected peptides, showing diverse functional group tolerance. It is applicable for late-stage functionalization synthetic strategies, as demonstrated in the synthesis of the triazole analogue of losartan. The preparation of orthogonally protected azahistidine from Fmoc-l-propargylglycine was realized on a gram scale. The hazardous nature of hydrazoic acid has been diminished as it forms in situ in <6% concentrations at which it is safe to handle. Reactions of distilled solutions of hydrazoic acid indicated its role as a reactive species in the copper-catalyzed reaction.
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Affiliation(s)
- Dominik Jankovič
- Faculty of Chemistry and
Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Miha Virant
- Faculty of Chemistry and
Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Martin Gazvoda
- Faculty of Chemistry and
Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
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11
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An Orthogonal Synthetic Approach to Nonsymmetrical Bisazolyl 2,4,6-Trisubstituted Pyridines. Molecules 2022; 27:molecules27051746. [PMID: 35268847 PMCID: PMC8911976 DOI: 10.3390/molecules27051746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/02/2022] [Accepted: 03/05/2022] [Indexed: 11/16/2022] Open
Abstract
A three-step synthetic route giving access to nonsymmetrical bisazolyl 2,4,6-trisubstituted pyridines with different substituents on the pyrazole, indazole, and pyridine heterocycles is described. From the readily available 4-bromo-2,6-difluoropyridine, both fluorine atoms allow for easy selective stepwise substitution, and the bromine atom provides easy access to additional functionalities through both Suzuki and Sonogashira Pd(0) cross-coupling reactions. These synthons represent optimal structures as building blocks in complexation and metalloorganic structures for the tuning of their chelating and photophysical properties.
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12
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Shafran YM, Hussein AA, Beliaev NA, Shevyrin VA, Shityakov S, Beryozkina TV, Bakulev VA. Selective Synthesis of Azoloyl NH-1,2,3-Triazoles and Azolyl Diazoketones: Experimental and Computational Insights. ACS OMEGA 2022; 7:5008-5031. [PMID: 35187318 PMCID: PMC8851643 DOI: 10.1021/acsomega.1c05898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/18/2022] [Indexed: 05/03/2023]
Abstract
Here, we report that the reaction of enaminones, from a class of azole series, with sulfonyl azides leads to a difficult-to-separate mixture of two pairs of compounds: (1) 4-azoloyl-NH-1,2,3-triazoles with sulfonamides and (2) azolyl diazoketones with N-sulfonamidines, as a result of the implementation of two competing reactions. On one hand, the electron-donating methyl or methoxy group in the aryl para-position of arylsulfonyl azides favors the production of NH-1,2,3-triazoles together with sulfonamides. On the other hand, the use of highly electrophilic 4-nitrophenylsulfonyl azide promotes the formation of diazoketones and sulfonamidines. It is shown that the direction of each reaction is not only controlled by the nature of the initial enaminones and sulfonyl azides but also depends on the tested solvent. The problem of removing sulfonamides and amidines from the desired products was solved for the first time using new water-soluble enaminones. Based on the experimental and computational studies, the factors contributing to the selective course of alternative reactions were identified, and methods for the synthesis of azoloyl-NH-1,2,3-triazoles and azolyl diazoketones were developed. Density functional theory (DFT) results have shown that the 1,3-dipolar cycloaddition is totally driven toward one single regioisomer with a high asynchronous bond formation, and the introduction of an electron-deficient group in sulfonyl azides induces faster cycloaddition. Additionally, DFT calculations were used to gain further mechanistic insights on the reaction studied here.
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Affiliation(s)
- Yuri M. Shafran
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Aqeel A. Hussein
- Department
of Pharmacy, College of Medicine, Komar
University of Science and Technology, Sulaymaniyah 46002, Kurdistan Region, Iraq
| | - Nikolai A. Beliaev
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Vadim A. Shevyrin
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Sergey Shityakov
- Laboratory
of Chemoinformatics, Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg 191002, Russia
| | - Tetyana V. Beryozkina
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Vasiliy A. Bakulev
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
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13
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Li XZ, Tian CB, Sun QF. Coordination-Directed Self-Assembly of Functional Polynuclear Lanthanide Supramolecular Architectures. Chem Rev 2022; 122:6374-6458. [PMID: 35133796 DOI: 10.1021/acs.chemrev.1c00602] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lanthanide supramolecular chemistry is a fast growing and intriguing research field due to the unique photophysical, magnetic, and coordination properties of lanthanide ions (LnIII). Compared with the intensively investigated mononuclear Ln-complexes, polymetallic lanthanide supramolecular assemblies offer more structural superiority and functional advantages. In recent decades, significant progress has been made in polynuclear lanthanide supramolecules, varying from structural evolution to luminescent and magnetic functional materials. This review summarizes the design principles in ligand-induced coordination-driven self-assembly of polynuclear Ln-structures and intends to offer guidance for the construction of more elegant Ln-based architectures and optimization of their functional performances. Design principles concerning the water solubility and chirality of the lanthanide-organic assemblies that are vital in extending their applications are emphasized. The strategies for improving the luminescent properties and the applications in up-conversion, host-guest chemistry, luminescent sensing, and catalysis have been summarized. Magnetic materials based on supramolecular assembled lanthanide architectures are given in an individual section and are classified based on their structural features. Challenges remaining and perspective directions in this field are also briefly discussed.
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Affiliation(s)
- Xiao-Zhen Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Chong-Bin Tian
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
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14
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Sun Q, Liu M, Ruan H, Chen C, Zhao Y, Tan G, Wang X. The cis/ trans conformation approach for tuning the magnetic coupling in a diradical: isolation of pure pyridine-based diradical dianions. Chem Commun (Camb) 2022; 58:1708-1711. [PMID: 35023510 DOI: 10.1039/d1cc05661a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two-electron reductions of 3,3'-bis(2,6-dimesitylpyridin-4-yl)-1,1'-biphenyl 1 with elemental potassium in the absence and presence of 18-c-6 afforded the diradical dianion salts [K+]2˙[trans-1]˙˙2- and [K(18-c-6)]+2˙[cis-1]˙˙2-, which exhibit trans and cis configurations, respectively. The transoid conformer could be converted to the cisoid one through reacting with 18-c-6.
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Affiliation(s)
- Qiang Sun
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Min Liu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Huapeng Ruan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Chao Chen
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Gengwen Tan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xinping Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
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15
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Findlay JA, Ross DAW, Crowley JD. Ferrocene Rotary Switches Featuring 2‐Pyridyl‐1,2,3‐triazole “Click” Chelates. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- James A. Findlay
- Department of Chemistry University of Otago Dunedin 9054 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand
| | - Daniel A. W. Ross
- Department of Chemistry University of Otago Dunedin 9054 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand
| | - James D. Crowley
- Department of Chemistry University of Otago Dunedin 9054 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand
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16
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Matveeva AG, Vologzhanina AV, Pasechnik MP, Aysin RR, Matveev SV, Zubavichus YV, Artyushin OI, Sharova EV, Godovikov IA, Brel VK. Competing N vs. P(O),C(O)-coordination in complexes of mono- and bis-1,2,3-triazole ligands modified by carbamoylmethylphosphine oxide fragments with palladium(II), uranyl(II), and lanthanum(III): solid and solution structures. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115680] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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McCarney EP, McCarthy WJ, Lovitt JI, Gunnlaugsson T. Macrocyclic vs. [2]catenane btp structures: influence of (aryl) substitution on the self templation of btp ligands in macrocyclic synthesis. Org Biomol Chem 2021; 19:10189-10200. [PMID: 34788352 DOI: 10.1039/d1ob02032c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of four 2,6-bis(1,2,3-triazol-4-yl)pyridine (btp) olefin based ligands 3, 4, 11 and 12 is described and their attempted use to form mechanically interlocked molecules using ring closing metatheses (RCM) reactions. The btp ligands were modified in two ways, in 3 and 4 the aryl substitution pattern was changed from 4th position to 3rd position and in the case of 11 and 12, the arms were replaced with aliphatic chains. Our study demonstrates that for all four ligands, the RCM reactions only result in the formation of macrocyclic structures, which in three of the cases, were structurally characterised in both solution (using NMR and HRMS) and in the solid-state using X-ray crystallography. NMR studies were also carried out to investigate if these ligands could preorganise in solution via hydrogen bonding interactions. This study provides a handle of how such precursor substitution can be used to direct the formation of macrocycles or mechanically interlocked structures.
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Affiliation(s)
- Eoin P McCarney
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - William J McCarthy
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - June I Lovitt
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,SFI Synthesis and Solid State Pharmaceutical Centre (SSPC), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,SFI Synthesis and Solid State Pharmaceutical Centre (SSPC), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
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18
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Henwood AF, Hegarty IN, McCarney EP, Lovitt JI, Donohoe S, Gunnlaugsson T. Recent advances in the development of the btp motif: A versatile terdentate coordination ligand for applications in supramolecular self-assembly, cation and anion recognition chemistries. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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19
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Ross DW, Findlay JA, Vasdev RAS, Crowley JD. Can 2-Pyridyl-1,2,3-triazole "Click" Ligands be Used to Develop Cu(I)/Cu(II) Molecular Switches? ACS OMEGA 2021; 6:30115-30129. [PMID: 34778683 PMCID: PMC8582268 DOI: 10.1021/acsomega.1c04977] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Molecular switching processes are important in a range of areas including the development of molecular machines. While there are numerous organic switching systems available, there are far less examples that exploit inorganic materials. The most common inorganic switching system remains the copper(I)/copper(II) switch developed by Sauvage and co-workers over 20 years ago. Herein, we examine if bidentate 2-(1-benzyl-1H-1,2,3-triazol-4-yl)pyridine (pytri) and tridentate 2,6-bis[(4-phenyl-1H-1,2,3-triazol-1-yl)methyl]pyridine (tripy) moieties can be used to replace the more commonly exploited polypyridyl ligands 2,2'-bypyridine (bpy)/1,10-phenanthroline (phen) and 2,2';6',2″-terpyridine (terpy) in a copper(I)/(II) switching system. Two new ditopic ligands that feature bidentate (pytri, L1 or bpytri, L2) and tridentate tripy metal binding pockets were synthesized and used to generate a family of heteroleptic copper(I) and copper(II) 6,6'-dimesityl-2,2'-bipyridine (diMesbpy) complexes. Additionally, we synthesized a series of model copper(I) and copper(II) diMesbpy complexes. A combination of techniques including nuclear magnetic resonance (NMR) and UV-vis spectroscopies, high-resolution electrospray ionization mass spectrometry, and X-ray crystallography was used to examine the behavior of the compounds. It was found that L1 and L2 formed [(diMesbpy)Cu(L1 or L2)]2+ complexes where the copper(II) diMesbpy unit was coordinated exclusively in the tridenate tripy binding site. However, when the ligands (L1 and L2) were complexed with copper(I) diMesbpy units, a complex mixture was obtained. NMR and MS data indicated that a 1:1 stoichiometry of [Cu(diMesbpy)]+ and either L1 or L2 generated three complexes in solution, the dimetallic [(diMesbpy)2Cu2(L1 or L2)]2+ and the monometallic [(diMesbpy)Cu(L1 or L2)]+ isomers where the [Cu(diMesbpy)]+ unit is coordinated to either the bidentate or tridentate tripy binding sites of the ditopic ligands. The dimetallic [(diMesbpy)2Cu2(L1 or L2)](PF6)2 complexes were structurally characterized using X-ray crystallography. Both complexes feature a [Cu(diMesbpy)]+ coordinated to the bidentate (pytri or bpytri) pocket of the ditopic ligands (L1 or L2), as expected. They also feature a second [Cu(diMesbpy)]+ coordinated to the nominally tridentate tripy binding site in a four-coordinate hypodentate κ2-fashion. Competition experiments with model complexes showed that the binding strength of the bidentate pytri is similar to that of the κ2-tripy ligand, leading to the lack of selectivity. The results suggest that the pytri/tripy and bpytri/tripy ligand pairs cannot be used as replacements for the more common bpy/phen-terpy partners due to the lack of selectivity in the copper(I) state.
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Affiliation(s)
- Daniel
A. W. Ross
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
- MacDiarmid
Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - James A. Findlay
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
- MacDiarmid
Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - Roan A. S. Vasdev
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
- MacDiarmid
Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
- MacDiarmid
Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
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20
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Torabi M, Zolfigol MA, Yarie M, Gu Y. Application of ammonium acetate as a dual rule reagent-catalyst in synthesis of new symmetrical terpyridines. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Capel Berdiell I, Davies DJ, Woodworth J, Kulmaczewski R, Cespedes O, Halcrow MA. Structures and Spin States of Iron(II) Complexes of Isomeric 2,6-Di(1,2,3-triazolyl)pyridine Ligands. Inorg Chem 2021; 60:14988-15000. [PMID: 34547208 DOI: 10.1021/acs.inorgchem.1c02404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Iron(II) complex salts of 2,6-di(1,2,3-triazol-1-yl)pyridine (L1) are unexpectedly unstable in undried solvent. This is explained by the isolation of [Fe(L1)4(H2O)2][ClO4]2 and [Fe(NCS)2(L1)2(H2O)2]·L1, containing L1 bound as a monodentate ligand rather than in the expected tridentate fashion. These complexes associate into 44 grid structures through O-H···N hydrogen bonding; a solvate of a related 44 coordination framework, catena-[Cu(μ-L1)2(H2O)2][BF4]2, is also presented. The isomeric ligands 2,6-di(1,2,3-triazol-2-yl)pyridine (L2) and 2,6-di(1H-1,2,3-triazol-4-yl)pyridine (L3) bind to iron(II) in a more typical tridentate fashion. Solvates of [Fe(L3)2][ClO4]2 are low-spin and diamagnetic in the solid state and in solution, while [Fe(L2)2][ClO4]2 and [Co(L3)2][BF4]2 are fully high-spin. Treatment of L3 with methyl iodide affords 2,6-di(2-methyl-1,2,3-triazol-4-yl)pyridine (L4) and 2-(1-methyl-1,2,3-triazol-4-yl)-6-(2-methyl-1,2,3-triazol-4-yl)pyridine (L5). While salts of [Fe(L5)2]2+ are low-spin in the solid state, [Fe(L4)2][ClO4]2·H2O is high-spin, and [Fe(L4)2][ClO4]2·3MeNO2 exhibits a hysteretic spin transition to 50% completeness at T1/2 = 128 K (ΔT1/2 = 6 K). This transition proceeds via a symmetry-breaking phase transition to an unusual low-temperature phase containing three unique cation sites with high-spin, low-spin, and 1:1 mixed-spin populations. The unusual distribution of the spin states in the low-temperature phase reflects "spin-state frustration" of the mixed-spin cation site by an equal number of high-spin and low-spin nearest neighbors. Gas-phase density functional theory calculations reproduce the spin-state preferences of these and some related complexes. These highlight the interplay between the σ-basicity and π-acidity of the heterocyclic donors in this ligand type, which have opposing influences on the molecular ligand field. The Brønsted basicities of L1-L3 are very sensitive to the linkage isomerism of their triazolyl donors, which explains why their iron complex spin states show more variation than the better-known iron(II)/2,6-dipyrazolylpyridine system.
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Affiliation(s)
- Izar Capel Berdiell
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Daniel J Davies
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Jack Woodworth
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Oscar Cespedes
- School of Physics and Astronomy, University of Leeds, E. C. Stoner Building, Leeds LS2 9JT, U.K
| | - Malcolm A Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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22
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McCarney EP, Lovitt JI, Gunnlaugsson T. Mechanically Interlocked Chiral Self-Templated [2]Catenanes from 2,6-Bis(1,2,3-triazol-4-yl)pyridine (btp) Ligands. Chemistry 2021; 27:12052-12057. [PMID: 34106499 PMCID: PMC8457180 DOI: 10.1002/chem.202101773] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Indexed: 12/24/2022]
Abstract
We report the efficient self-templated formation of optically active 2,6-bis(1,2,3-triazol-4-yl)pyridine (btp) derived homocircuit [2]catenane enantiomers. This represents the first example of the enantiopure formation of chiral btp homocircuit [2]catenanes from starting materials consisting of a classical chiral element; X-ray diffraction crystallography enabled the structural characterization of the [2]catenane. The self-assembly reaction was monitored closely in solution facilitating the characterization of the pseudo-rotaxane reaction intermediate prior to mechanically interlocking the pre-organised system via ring-closing metathesis.
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Affiliation(s)
- Eoin P. McCarney
- School of Chemistryand SFI Synthesis and Solid State Pharmaceutical Centre (SSPC)Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin 2Ireland
| | - June I. Lovitt
- School of Chemistryand SFI Synthesis and Solid State Pharmaceutical Centre (SSPC)Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin 2Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistryand SFI Synthesis and Solid State Pharmaceutical Centre (SSPC)Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin 2Ireland
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23
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O’Neil AT, Zhang N, Harrison JA, Goldup SM, Kitchen JA. Synthesis, photophysical and assembly studies of novel luminescent lanthanide(III) complexes of 1,2,3-triazolyl-pyridine-2,6-dicarboxamide-based ligands. Supramol Chem 2021. [DOI: 10.1080/10610278.2021.1955120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Alex T. O’Neil
- Chemistry, School of Natural and Computational Sciences, Massey University, Auckland, NZ, New Zealand
| | - Ningjin Zhang
- School of Chemistry, University of Southampton, Highfield, Southampton, UK
| | - John A. Harrison
- Chemistry, School of Natural and Computational Sciences, Massey University, Auckland, NZ, New Zealand
| | - Stephen M. Goldup
- School of Chemistry, University of Southampton, Highfield, Southampton, UK
| | - Jonathan A. Kitchen
- Chemistry, School of Natural and Computational Sciences, Massey University, Auckland, NZ, New Zealand
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24
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Alemayehu YA, Ilhami FB, Manayia AH, Cheng CC. Mercury-containing supramolecular micelles with highly sensitive pH-responsiveness for selective cancer therapy. Acta Biomater 2021; 129:235-244. [PMID: 34087441 DOI: 10.1016/j.actbio.2021.05.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 02/07/2023]
Abstract
Construction and manipulation of metal-based supramolecular polymers-which are based on a combination of nucleobase hydrogen bonding interactions and functional metal ions-to obtain the desired physicochemical properties and achieve the efficacy and safety required for biomedical applications remain extremely challenging. We successfully designed and synthesized a new mercury-based supramolecular polymer, Hg-BU-PPG, containing an oligomeric polypropylene glycol backbone and pH-sensitive uracil-mercury-uracil (U-Hg-U) linkages. This multifunctional metallo-supramolecular material spontaneously self-organizes into nanosized spherical micelles in aqueous solution. The micelles possess several attractive properties, including desired long-term structural stability in serum-rich conditions, unique fluorescence behavior and highly sensitive, well-controlled pH-responsiveness. Interestingly, Hg-BU-PPG micelles exhibited strong, selective cytotoxic effects towards cancer cells in vitro, without harming normal cells. The highly selective cytotoxicity can be attributed to rapid dissociation of the U-Hg-U complexes within the micelles in the mildly acidic intracellular pH of cancer cells, followed by release of inherently toxic mercury ions. Importantly, fluorescence microscopy and flow cytometry clearly demonstrated that Hg-BU-PPG selectively entered the cancer cells via endocytosis and rapidly promoted massive apoptotic cell death. In contrast, internalization of Hg-BU-PPG by normal cells was limited, resulting in high biocompatibility and no cytotoxic effects. Thus, this newly discovered 'cytotoxicity-concealing' supramolecular system could represent a viable route to enhance the safety and efficacy of cancer therapy and bioimaging via a strategy that does not require incorporation of anticancer drugs and fluorescent probes. STATEMENT OF SIGNIFICANCE: We report a significant breakthrough in the construction of mercury-containing supramolecular polymers, namely the creation of multifunctional micelles with unique chemical and physical properties conferred by pH-sensitive uracil-mercury-uracil (U-Hg-U) linkages and tunable structural and dynamical features due to the presence of hydrogen-bonded uracil moieties. Importantly, in vitro experiments clearly demonstrated that introduction of the U-Hg-U complexes into the micelles not only improved the efficiency of selective uptake via endocytosis into cancer cells, but also accelerated the induction of massive apoptotic cell death. Thus, this work provides crucial new insight for the development of metallo-supramolecular polymeric micelles that may substantially enhance the safety and efficacy of cancer therapy and bioimaging without requiring incorporation of anticancer drugs or fluorescent probes.
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25
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Feng XS, Li XZ, Hu SJ, Yan DN, Zhou LP, Sun QF. Base- and Metal-Dependent Self-Assembly of Lathanide-Organic Coordination Polymers or Macrocycles with Tetradentate Acylhydrazone-based Ditopic Ligands. Chem Asian J 2021; 16:1392-1397. [PMID: 33886167 DOI: 10.1002/asia.202100256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/17/2021] [Indexed: 11/06/2022]
Abstract
Herein, we report a comprehensive study on the lanthanide-directed coordination self-assembly with two bis-tetradentate acylhydrazone ligands H4 L1 and H4 L2 . Multifarious outcomes, which are base- and metal-dependent, were revealed by NMR, ESI-TOF-MS and X-ray crystallography. In the absence of base, bent H4 L1 was assembled into dinuclear double-strand helicate Ln2 (H2 L1 )2 by partially-deprotonated assembly with La, Sm or Eu, while trinuclear Ln3 (H2 L1 )3 with Yb or Lu. For linear H4 L2 , infinite 1D zig-zag metal-organic polymeric chain (Ln2 H2 L2 )n was obtained. However, complete deprotonated L1 and L2 assembled into discrete trinuclear Ln3 (L1 /2 )3 and tetranuclear Ln4 (L1 /2 )4 macrocyclic structures under the basic condition. For these, there are multiple possible isomers coexisting in the solution which were enumerated and simulated with molecular mechanic modeling. Visible-light sensitized NIR emissions on the Yb complexes have been observed, endowing them potential application in photofunctional materials.
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Affiliation(s)
- Xiao-Shan Feng
- College of Chemistry and Material Science, Fujian Normal University, Fuzhou, 350007, P. R. China.,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China
| | - Xiao-Zhen Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China
| | - Shao-Jun Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R China
| | - Dan-Ni Yan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China
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26
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O'Reilly C, Blasco S, Parekh B, Collins H, Cooke G, Gunnlaugsson T, Byrne JP. Ruthenium-centred btp glycoclusters as inhibitors for Pseudomonas aeruginosa biofilm formation. RSC Adv 2021; 11:16318-16325. [PMID: 35479152 PMCID: PMC9030604 DOI: 10.1039/d0ra05107a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 04/26/2021] [Indexed: 11/21/2022] Open
Abstract
Carbohydrate-decorated clusters (glycoclusters) centred on a Ru(ii) ion were synthesised and tested for their activity against Pseudomonas aeruginosa biofilm formation. These clusters were designed by conjugating a range of carbohydrate motifs (galactose, glucose, mannose and lactose, as well as galactose with a triethylene glycol spacer) to a btp (2,6-bis(1,2,3-triazol-4-yl)pyridine) scaffold. This scaffold, which possesses a C2 symmetry, is an excellent ligand for d-metal ions, and thus the formation of the Ru(ii)-centred glycoclusters 7 and 8Gal was achieved from 5 and 6Gal; each possessing four deprotected carbohydrates. Glycocluster 8Gal, which has a flexible spacer between the btp and galactose moieties, showed significant inhibition of P. aeruginosa bacterial biofilm formation. By contrast, glycocluster 7, which lacked the flexible linker, didn't show significant antimicrobial effects and neither does the ligand 6Gal alone. These results are proposed to arise from carbohydrate–lectin interactions with LecA, which are possible for the flexible metal-centred multivalent glycocluster. Metal-centred glycoclusters present a structurally versatile class of antimicrobial agent for P. aeruginosa, of which this is, to the best of our knowledge, the first example. Ruthenium-centred glycoclusters based on carbohydrate-functionalised bis(triazolyl)pyridine ligands show Pseudomonas aeruginosa biofilm inhibition, with activity that is dependent on ligand structure.![]()
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Affiliation(s)
- Ciaran O'Reilly
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin Ireland.,School of Medicine, University College Dublin Belfield Dublin 4 Ireland
| | - Salvador Blasco
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin Ireland
| | - Bina Parekh
- School of Medicine, University College Dublin Belfield Dublin 4 Ireland
| | - Helen Collins
- Department of Applied Science, Tallaght Campus, Technological University Dublin Ireland
| | - Gordon Cooke
- School of Medicine, University College Dublin Belfield Dublin 4 Ireland.,Department of Applied Science, Tallaght Campus, Technological University Dublin Ireland
| | | | - Joseph P Byrne
- School of Chemistry, National University of Ireland Galway University Road Galway Ireland
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27
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Anwar MU, Al-Harrasi A, Rawson JM. Structures, properties and applications of Cu(II) complexes with tridentate donor ligands. Dalton Trans 2021; 50:5099-5108. [PMID: 33881088 DOI: 10.1039/d1dt00483b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Tridentate ligands offer theree donor atoms to coordinate to metal ions. The remaining vacant coordination sites on the metal ions provided opportunities to implement additional co-ligands to generate complexes with desired properties. Herein we discuss selected examples of Cu(ii) complexes with tridentate ligands utilizing combinations of N, O, S, and Se donors, focusing on effects of ligand flexibility/rigidity on their coordination modes, properties and applications.
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Affiliation(s)
- Muhammad Usman Anwar
- Natural and Medical Sciences Research Centre, University of Nizwa, Birkat Almouz 616, Oman.
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Centre, University of Nizwa, Birkat Almouz 616, Oman.
| | - Jeremy M Rawson
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave, Windsor, ON N9B3P4, Canada.
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28
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Laverick RJ, Zhang N, Reid E, Kim J, Kilpin KJ, Kitchen JA. Solution processible Co(III) quinoline-thiosemicarbazone complexes: synthesis, structure extension, and Langmuir-Blodgett deposition studies. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1879384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Ningjin Zhang
- Department of Chemistry, University of Southampton, Southampton, UK
| | - Eleanor Reid
- Department of Chemistry, University of Southampton, Southampton, UK
| | - Jaehwan Kim
- Department of Chemistry, School of Natural and Computational Sciences, Massey University, Auckland, New Zealand
| | - Kelly J. Kilpin
- Department of Chemistry, School of Natural and Computational Sciences, Massey University, Auckland, New Zealand
| | - Jonathan A. Kitchen
- Department of Chemistry, School of Natural and Computational Sciences, Massey University, Auckland, New Zealand
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29
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Iron-catalyzed [4 + 2] annulation of α,β-unsaturated ketoxime acetates with enaminones toward functionalized pyridines. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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30
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Pyridinyl-triazole ligand systems for highly efficient CuI-catalyzed azide-alkyne cycloaddition. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2020.106165] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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31
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Varaprasad B, Bharat Kumar K, Siddaiah V, Shyamala P, Chinnari L. Copper-catalyzed efficient access to 2,4,6-triphenyl pyridines via oxidative decarboxylative coupling of aryl acetic acids with oxime acetates. NEW J CHEM 2021. [DOI: 10.1039/d1nj01987b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A simple and efficient strategy for the synthesis of 2,4,6- triphenyl pyridines has been developed through copper-catalysed oxidative decarboxylative coupling of C(sp3) aryl acetic acids with oxime acetates using oxygen as a sole terminal oxidant.
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Affiliation(s)
- Bodala Varaprasad
- Department of Organic Chemistry & FDW, Andhra University, Visakhapatnam, 530003, India
- Department of Physical Nuclear and Chemical Oceanography, Andhra University, Visakhapatnam, 530003, India
| | - Karasala Bharat Kumar
- Department of Organic Chemistry & FDW, Andhra University, Visakhapatnam, 530003, India
| | - Vidavalur Siddaiah
- Department of Organic Chemistry & FDW, Andhra University, Visakhapatnam, 530003, India
| | - Pulipaka Shyamala
- Department of Physical Nuclear and Chemical Oceanography, Andhra University, Visakhapatnam, 530003, India
| | - Lekkala Chinnari
- Department of Organic Chemistry & FDW, Andhra University, Visakhapatnam, 530003, India
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Obydennov DL, Simbirtseva AE, Piksin SE, Sosnovskikh VY. 2,6-Dicyano-4-pyrone as a Novel and Multifarious Building Block for the Synthesis of 2,6-Bis(hetaryl)-4-pyrones and 2,6-Bis(hetaryl)-4-pyridinols. ACS OMEGA 2020; 5:33406-33420. [PMID: 33403303 PMCID: PMC7774280 DOI: 10.1021/acsomega.0c05357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/02/2020] [Indexed: 05/08/2023]
Abstract
In this work, a three-stage and easily scalable synthesis of 2,6-dicyano-4-pyrone (overall yield of 45%) as a new convenient building block has been developed from diethyl acetonedioxalate. It was shown that the transformation with hydroxylamine and [3 + 2]-cycloaddition, in contrast to the reactions with hydrazines, selectively proceed through the attack at the cyano groups without the pyrone ring-opening to give symmetrical and unsymmetrical pyrone-bearing heterocyclic triads containing 1,2,4- and 1,3,4-oxadiazoles as well as tetrazole moieties. The reaction of 2,6-bis(hetaryl)-4-pyrones with ammonia afforded 2,6-bis(hetaryl)pyridines in 63-87% yields. The 4-pyridone/4-pyridinol tautomerism of 2,6-bis(hetaryl)pyridinols and the influence of the nature of adjacent azolyl moieties on this equilibrium have been discussed.
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33
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Rani P, Lal K, Ghule VD, Shrivastava R. Green Synthesis of Triazole-Based Chemosensors and their Efficacy Towards Mercury Sensing. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411015666191010122744] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The synthesis of small organic molecules based Hg2+ ions receptors have
gained considerable attention because it is one of the most prevalent toxic metals which is continuously
discharged into the environment by different natural and industrial activities. 1,4-Disubstituted
1,2,3-triazoles have been reported as good chemosensors for the detection of various metal ions including
Hg2+ ions.
Methods:
The synthesis of 1,2,3-triazoles (4a-4c) was achieved by Cu(I)-catalyzed azide-alkyne cycloaddition,
and their binding affinity towards various metal ions and anions were studied by UVVisible
titration experiments. The perchlorate salts of metal ions and tetrabutylammonium salts of
anions were utilized for the UV-Visible experiments. DFT studies were performed to understand the
binding and mechanism on the sensing of 4a toward Hg2+ using the B3LYP/6-311G(d,p) method for
4a and B3LYP/LANL2DZ for 4a-Hg2+ species on the Gaussian 09W program.
Results:
The UV-visible experiments indicated that the compounds 4a-4c show a selective response
towards Hg2+ ion in UV-Visible spectra, while other ions did not display such changes in the absorption
spectra. The binding stoichiometry was evaluated by Job’s plot which indicated the 1:1 binding
stoichiometry between receptors (4a-4c) and Hg2+ ion. The detection limit of 4a, 4b and 4c for the
Hg2+ ions was found to be 29.1 nM, 3.5 μM and 1.34 μM, respectively.
Conclusion:
Some 1,2,3-triazole derivatives were synthesized (4a-4c) exhibiting high selectively and
sensitivity towards Hg2+ ions in preference to other ions. Compound 4a has a low detection limit of
29.1 nM and the binding constant of 2.3×106 M-1. Similarly, 4b and 4c also showed selective sensing
towards Hg2+ ions in the μM range. The observed experimental results were corroborated by density
functional theory (DFT) calculations.
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Affiliation(s)
- Poonam Rani
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar-125001, India
| | - Kashmiri Lal
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar-125001, India
| | - Vikas D. Ghule
- Department of Chemistry, National Institute of Technology, Kurukshetra, 136119, India
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Pantalon Juraj N, Krklec M, Novosel T, Perić B, Vianello R, Raić-Malić S, Kirin SI. Copper(ii) and zinc(ii) complexes of mono- and bis-1,2,3-triazole-substituted heterocyclic ligands. Dalton Trans 2020; 49:9002-9015. [PMID: 32558875 DOI: 10.1039/d0dt01244k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Chelating 1,4-disubstituted mono- (8a-8d) and bis-1,2,3-triazole-based (9a-11a) ligands were prepared by regioselective copper(i)-catalysed 1,3-dipolar cycloaddition of terminal alkynes with aromatic azides, together with bioconjugate 13a synthesized by amide coupling of l-phenylalanine methyl ester to 11a. Cu(ii) and Zn(ii) complexes were prepared and single crystal structures were determined for complexes 8aCu, 8dCu, 9cCu and 10cCu, as well as the free ligands 10a and 10c. The in situ prepared Zn(ii) complexes were studied by NMR spectroscopy, while the stoichiometry of the Cu(ii) complexes in solution was determined by UV-Vis titrations and confirmed by the electronic structure DFT calculations at the (SMD)/M05-2X/6-31+G(d)/LanL2DZ+ECP level of theory.
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35
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Colombo Dugoni G, Baggioli A, Famulari A, Sacchetti A, Martí-Rujas J, Mariani M, Macerata E, Mossini E, Mele A. Structural properties of the chelating agent 2,6-bis(1-(3-hydroxypropyl)-1,2,3-triazol-4-yl)pyridine: a combined XRD and DFT structural study. RSC Adv 2020; 10:19629-19635. [PMID: 35515445 PMCID: PMC9054079 DOI: 10.1039/d0ra04142d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 05/14/2020] [Indexed: 11/21/2022] Open
Abstract
The conformational isomerism of the chelating agent 2,6-bis(1-(3-hydroxypropyl)-1,2,3-triazol-4-yl)pyridine (PTD), exploited in fuel reprocessing in spent nuclear waste, has been studied by single crystal X-ray diffraction analysis in combination with an extensive DFT conformational investigation. In the solid-state, the elucidated crystal structure (i.e., not yet published) shows that by thermal treatment (DSC) no other phases are observed upon crystallization from the melt, indicating that the conformation observed by X-ray data is rather stable. Mapping of intermolecular and intramolecular noncovalent interactions has been used to elucidate the unusual arrangement of the asymmetric unit. Considerations relating to the stability of different conformational isomers in aqueous and non-aqueous solutions are also presented. The accurate structural description reported here might open various research topics such as the potential of PTD to act as an outer sphere ligand in the formation of second sphere coordination complexes and their interconversion by mechanochemical means.
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Affiliation(s)
- Greta Colombo Dugoni
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Alberto Baggioli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Antonino Famulari
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Alessandro Sacchetti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Javier Martí-Rujas
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy .,Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia Via Pascoli 70/3 20133 Milano Italy
| | - Mario Mariani
- Department of Energy, Nuclear Engineering Division (CeSNEF), Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Elena Macerata
- Department of Energy, Nuclear Engineering Division (CeSNEF), Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Eros Mossini
- Department of Energy, Nuclear Engineering Division (CeSNEF), Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
| | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano Piazza L. da Vinci 32 20133 Milan Italy
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36
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Van Craen D, Flynn IG, Carta V, Flood AH. Bimetallic Bis-anion Cascade Complexes of Magnesium in Nonaqueous Solution. Inorg Chem 2020; 59:5939-5948. [DOI: 10.1021/acs.inorgchem.9b03710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Van Craen
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
| | - Ian G. Flynn
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
| | - Veronica Carta
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
| | - Amar H. Flood
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
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37
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Jose J, Prathibha T, Karthikeyan N, Venkatesan K, Selvan BR, Seshadri H, Venkatachalapathy B, Ravichandran C. Evaluation of selected solvent systems for the single-cycle separation of Am(III) from Eu(III) using aqueous soluble sulphonated bis-triazinylpyridine. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Gao S, Wang J, Li M, Kleiner I, Feng G, Gou Q. Microwave spectra and structures of 2-fluoro-4-picoline. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Synthesis and characterization of 1,2,3-triazoles-linked urea hybrid sensor for selective sensing of fluoride ion. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127437] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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40
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Xu X, Jerca VV, Hoogenboom R. Self‐Healing Metallo‐Supramolecular Hydrogel Based on Specific Ni
2+
Coordination Interactions of Poly(ethylene glycol) with Bistriazole Pyridine Ligands in the Main Chain. Macromol Rapid Commun 2020; 41:e1900457. [DOI: 10.1002/marc.201900457] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/08/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Xiaowen Xu
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
| | - Valentin Victor Jerca
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
- Centre of Organic Chemistry “Costin D. Nenitzescu” Romanian Academy Spl. Independentei 202B 060023 Bucharest Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
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41
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Pandey S, Mandal T, Singh V. (
para
‐Cymene)Ru(II) Complexes with Chelating Benzotriazole Ligands: Application in Oxidation and Reduction Catalysis. ChemistrySelect 2020. [DOI: 10.1002/slct.201904495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sharmila Pandey
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal 462 066 India
| | - Tanmoy Mandal
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal 462 066 India
| | - Vivek Singh
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal 462 066 India
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42
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Zhang L, Duan J, Xu G, Ding X, Mao Y, Rong B, Zhu N, Fang Z, Li Z, Guo K. Copper-Catalyzed N–O Cleavage of α,β-Unsaturated Ketoxime Acetates toward Structurally Diverse Pyridines. J Org Chem 2020; 85:2532-2542. [DOI: 10.1021/acs.joc.9b03238] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Lei Zhang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Gaochen Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaojuan Ding
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yiyang Mao
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Binsen Rong
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhenjiang Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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43
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Zhiani R, Khoobi M, Sadeghzadeh SM. Ruthenium–birhodanine complex supported over fibrousphosphosilicate for photocatalytic CO2 reduction to formate. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.09.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Kreofsky NW, Dillenburg MD, Villa EM, Fletcher JT. Ru(II) coordination compounds of N-N bidentate chelators with 1,2,3 triazole and isoquinoline subunits: Synthesis, spectroscopy and antimicrobial properties. Polyhedron 2019; 177. [PMID: 32863525 DOI: 10.1016/j.poly.2019.114259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Bidentate chelators 1-(1-benzyl-1,2,3-triazol-4-yl)isoquinoline and 3-(1-benzyl-1,2,3-triazol-4-yl)isoquinoline were prepared from benzyl bromide and trimethylsilylethynylisoquinoline precursors using a tandem deprotection/substitution/CuAAC synthetic approach. Each chelator is capable of forming a stable 3:1 Ru(II) coordination compound, which forms as a geometric isomer mixture. These Ru(II) complexes possess unique MLCT absorbance signatures at 450/472 nm (1-isomer) and 367 nm (3-isomer) relative to their constituent chelating units. Minimum inhibitory concentration values as low as 0.4 μM are observed for Ru(II) complexes against representative Gram-positive bacteria Bacillus subtilis and Staphylococcus epidermidis. Comparing the MIC values of these isoquinoline compounds with analogous 2-(1-benzyl-1,2,3-triazol-4-yl)pyridine compounds shows a 2.5- to 40-fold improvement in potency. This study establishes that increased hydrophobicity introduced at the central chelating units of Ru(II) coordination compounds can be a useful means by which to optimize antimicrobial activity that is complimentary to the variation of peripheral substituent identity at the chelator's N1 triazole position.
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Affiliation(s)
- Nicholas W Kreofsky
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
| | - Maxwell D Dillenburg
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
| | - Eric M Villa
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
| | - James T Fletcher
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
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45
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Zhou Y, Li H, Zhu T, Gao T, Yan P. A Highly Luminescent Chiral Tetrahedral Eu 4L 4(L') 4 Cage: Chirality Induction, Chirality Memory, and Circularly Polarized Luminescence. J Am Chem Soc 2019; 141:19634-19643. [PMID: 31747264 DOI: 10.1021/jacs.9b07178] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Chiral lanthanide cages with circularly polarized luminescence (CPL) properties have found potential application in enantioselective guest recognition and sensing. However, it still remains a big challenge to develop a simple and robust method for the diastereoselective assembly of homochiral lanthanide cages in view of the large lability of the Ln(III) ions. Herein, we report the first example of the formation of a enantiopure lanthanide tetrahedral cage via a chiral ancillary ligand induction strategy. One such cage, (Eu4L4)(R/S-BINAPO)4, is assembled by four achiral C3-symmeric tris(β-diketones) (4,4',4″-tris(4,4,4-trifluoro-1,3-dioxobutyl)triphenylamine, L) as faces, four Eu(III) ions as vertices and four chiral R-/S-bis(diphenylphosphoryl)-1,1'-binaphthyl (R/S-BINAPO) as ancillary ligands. X-ray crystallography and NMR and CD spectra confirm the formation of a pair of enantiopure chiral topological tetrahedral cages, (Eu4L4)(R-BINAPO)4 and (Eu4L4)(S-BINAPO)4 (ΔΔΔΔ-1 and ΛΛΛΛ-1). As expected, the tetrahedral cages present strong CPL with |glum| values up to 0.20, while they unexpectedly give ultrahigh luminescent quantum yields (QYs) of up to 81%, the highest value reported in chiral Ln(III) complexes. More impressively, the chiral memory effect for a lanthanide-based assembly is observed for the first time. The chirality of the original cage 1 framework is retained after R/S-BINAPO is replaced by the achiral bis[2-(diphenylphosphino)phenyl] ether oxide (DPEPO), and thus another pair of enantiopure Eu(III) tetrahedral cages, ΔΔΔΔ- and ΛΛΛΛ-[(Eu4L4)(DPEPO)4] (ΔΔΔΔ-2 and ΛΛΛΛ-2), have been isolated. Encouragingly, cage 2 also presents an impressive luminescence quantum yield (QY = 68%) and intense CPL (|glum| = 0.11). This study offers a simple and low-cost synthesis strategy for the preparation of lanthanide cages with CPL properties.
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Affiliation(s)
- Yanyan Zhou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Hongfeng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Tianyu Zhu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Ting Gao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Pengfei Yan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
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46
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Wong HY, Lo WS, Yim KH, Law GL. Chirality and Chiroptics of Lanthanide Molecular and Supramolecular Assemblies. Chem 2019. [DOI: 10.1016/j.chempr.2019.08.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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47
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Ruthenium [NNN] and [NCN]-type pincer complexes with phosphine coligands: synthesis, structures and catalytic applications. TRANSIT METAL CHEM 2019. [DOI: 10.1007/s11243-019-00362-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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48
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Qin L, Liu QH, Wang L, Ma XR, Shen H, Li YY, Shi XX, Wu Y, Li J. A Pr3+-coordination polymer as an adsorbent for neutral red. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1687889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ling Qin
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, P. R. China
| | - Qing-He Liu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Li Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Xin-Ru Ma
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Hao Shen
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Yun-Yun Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Xi-Xiu Shi
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Yang Wu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
| | - Juan Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, P. R. China
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49
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Xu X, Guyse JFR, Jerca VV, Hoogenboom R. Metal Ion Selective Self‐Assembly of a Ligand Functionalized Polymer into [1+1] Macrocyclic and Supramolecular Polymer Structures via Metal–Ligand Coordination. Macromol Rapid Commun 2019; 41:e1900305. [DOI: 10.1002/marc.201900305] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaowen Xu
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
| | - Joachim F. R. Guyse
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
| | - Valentin Victor Jerca
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
- Centre of Organic Chemistry “Costin D. Nenitzescu” Romanian Academy Spl. Independentei 202B 060023 Bucharest Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
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50
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Hegarty IN, Dalton HL, Henwood AF, Hawes CS, Gunnlaugsson T. Unexpected linkage isomerism in chiral tetranuclear bis-tridentate (1,2,3-triazol-4-yl)-picolinamide (tzpa) grids. Chem Commun (Camb) 2019; 55:9523-9526. [PMID: 31332405 DOI: 10.1039/c9cc03316e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The synthesis of a chiral bis-tridentate (1,2,3-triazol-4-yl)-picolinamide (tzpa) ligand is described and its coordination chemistry with Cu(NO3)2 and [Cu(MeCN)4]PF6 is explored in the crystalline phase as well as in solution. Chiral [2 × 2] tetranuclear square grid complexes [Cu4(H21)4](NO3)8 and [Cu4(H1)4](PF6)4 were observed, and crystallographically analysed, these being linkage isomers with N4O2 and N5O coordination spheres, respectively. These come about by an unusual in situ amide deprotonation and coordination, which accompanies a CuI → CuII oxidation process.
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Affiliation(s)
- Isabel N Hegarty
- School of Chemistry and Trinity Biomedical Science Institute, University of Dublin, Trinity College Dublin, Dublin 2, Ireland.
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