1
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Come JH, Senter TJ, Clark MP, Court JJ, Gale-Day Z, Gu W, Krueger E, Liang J, Morris M, Nanthakumar S, O'Dowd H, Maltais F, Iyer G, Andreassi J, Boucher C, Considine T, Moody CS, Taylor W, Mohanty AK, Huang Y, Zuccola H, Coll J, Bonanno KC, Gagnon KJ, Gan L, Lu F, Gao H, Chakilam A, Engtrakul J, Song B, Crawford D, Doyle E, Kramer T, Vought B, Phillips J, Kemper R, Sanders M, Swett R, Furey B, Winquist R, Bunnage ME, Jackson KL, Charifson PS, Magavi SS. Discovery and Optimization of Pyrazole Amides as Inhibitors of ELOVL1. J Med Chem 2021; 64:17753-17776. [PMID: 34748351 DOI: 10.1021/acs.jmedchem.1c00944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Accumulation of very long chain fatty acids (VLCFAs) due to defects in ATP binding cassette protein D1 (ABCD1) is thought to underlie the pathologies observed in adrenoleukodystrophy (ALD). Pursuing a substrate reduction approach based on the inhibition of elongation of very long chain fatty acid 1 enzyme (ELOVL1), we explored a series of thiazole amides that evolved into compound 27─a highly potent, central nervous system (CNS)-penetrant compound with favorable in vivo pharmacokinetics. Compound 27 selectively inhibits ELOVL1, reducing C26:0 VLCFA synthesis in ALD patient fibroblasts, lymphocytes, and microglia. In mouse models of ALD, compound 27 treatment reduced C26:0 VLCFA concentrations to near-wild-type levels in blood and up to 65% in the brain, a disease-relevant tissue. Preclinical safety findings in the skin, eye, and CNS precluded progression; the origin and relevance of these findings require further study. ELOVL1 inhibition is an effective approach for normalizing VLCFAs in models of ALD.
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Affiliation(s)
- Jon H Come
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Timothy J Senter
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Michael P Clark
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - John J Court
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Zachary Gale-Day
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Wenxin Gu
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Elaine Krueger
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Jianglin Liang
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Mark Morris
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Suganthini Nanthakumar
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Hardwin O'Dowd
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Francois Maltais
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Ganesh Iyer
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - John Andreassi
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Christina Boucher
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Tony Considine
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Cameron S Moody
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - William Taylor
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Arun K Mohanty
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Yulin Huang
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Harmon Zuccola
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Joyce Coll
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Kenneth C Bonanno
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Kevin J Gagnon
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Lu Gan
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Fan Lu
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Hong Gao
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Ananthisrinivas Chakilam
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Juntyma Engtrakul
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Bin Song
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Dan Crawford
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Elisabeth Doyle
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Tal Kramer
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Bryan Vought
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Jonathan Phillips
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Raymond Kemper
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Martin Sanders
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Rebecca Swett
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Brinley Furey
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Ray Winquist
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Mark E Bunnage
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Katrina L Jackson
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Paul S Charifson
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
| | - Sanjay S Magavi
- Vertex Pharmaceuticals Incorporated, 50 Northern Ave, Boston, Massachusetts 02210, United States
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2
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Coletta M, Sanz S, Cutler DJ, Teat SJ, Gagnon KJ, Singh MK, Brechin EK, Dalgarno SJ. Magneto-structural studies of an unusual [Mn IIIMn IIGd III(OR) 4] 4- partial cubane from 2,2'-bis- p- tBu-calix[4]arene. Dalton Trans 2020; 49:14790-14797. [PMID: 33052369 DOI: 10.1039/d0dt02731f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Reaction of 2,2'-bis-p-tBu-calix[4]arene (H8L) with MnCl2·4H2O, GdCl3·6H2O and 2,6-pyridinedimethanol (H2pdm) affords [MnIIIMnIIGdIII(H3L)(pdmH)(pdm)(MeOH)2(dmf)]·3MeCN·dmf (3·3MeCN·dmf) upon vapour diffusion of MeCN into the basic dmf/MeOH mother liquor. 3 crystallises in the tetragonal space group P41212 with the asymmetric unit comprising the entire cluster. The highly unusual core contains a triangular arrangement of MnIIIMnIIGdIII ions housed within a [MnIIIMnIIGdIII(OR)4]4- partial cubane. Magnetic susceptibility and magnetisation data reveal best fit parameters JMn(II)-Mn(III) = +0.415 cm-1, JMn(III)-Gd(III) = +0.221 cm-1, JMn(II)-Gd(III) = -0.258 cm-1 and DMn(III) = -4.139 cm-1. Theoretically derived magnetic exchange interactions, anisotropy parameters, and magneto-structural correlations for 3 are in excellent agreement with the experimental data.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, Scotland EH14 4AS, UK.
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3
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Reinholdt A, Alemayehu AB, Gagnon KJ, Bendix J, Ghosh A. Electrophilic Activation of Osmium-Nitrido Corroles: The OsN Triple Bond as a π-Acceptor Metallaligand in a Heterobimetallic Os VIN-Pt II Complex. Inorg Chem 2020; 59:5276-5280. [PMID: 32227864 PMCID: PMC7311052 DOI: 10.1021/acs.inorgchem.0c00654] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Presented herein is a first investigation of the chemical reactivity of osmium-nitrido corroles, which are known for their unusual thermal, chemical, and photochemical stability. Elemental chlorine perchlorinates the β-positions of the triarylcorrole but leaves the OsN unit untouched. The OsN unit is also unaffected by a variety of other electrophilic and nucleophilic reagents. Upon photolysis, however, the anion of Zeise's salt associates with the nitrido ligand to generate an OsVI≡N-PtII complex. The very short OsN-Pt linkage [1.895(9)-1.917(8) Å] and the downfield 195Pt NMR resonance (-2702 ppm) suggest that the OsN corrole acts as a π-accepting ligand toward the Pt(II) center. This finding represents a rare example of the successful photochemical activation of a metal-ligand multiple bond that is too kinetically inert to exhibit any appreciable reactivity under thermal conditions.
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Affiliation(s)
- Anders Reinholdt
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Abraham B Alemayehu
- Department of Chemistry, UiT - The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Abhik Ghosh
- Department of Chemistry, UiT - The Arctic University of Norway, N-9037 Tromsø, Norway
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4
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Costa JS, Rodríguez-Jiménez S, Craig GA, Barth B, Beavers CM, Teat SJ, Gagnon KJ, Barrios LA, Roubeau O, Aromí G. Selective signalling of alcohols by a molecular lattice and mechanism of single-crystal-to-single-crystal transformations. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00645a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A molecular material undergoes spin-switching as it exchanges MeOH, EtOH or nPrOH with acetone from the lattice. The subsequent thermal single-crystal-to-single-crystal desorption of nPrOH is followed by single crystal X-ray diffraction snapshots.
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Affiliation(s)
- José Sánchez Costa
- Departament de Química Inorgànica i Orgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | | | - Gavin A. Craig
- Departament de Química Inorgànica i Orgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Benjamin Barth
- Departament de Química Inorgànica i Orgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | | | | | | | - Leoní A. Barrios
- Departament de Química Inorgànica i Orgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
- Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB)
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA)
- CSIC and Universidad de Zaragoza
- Zaragoza
- Spain
| | - Guillem Aromí
- Departament de Química Inorgànica i Orgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
- Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB)
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5
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Abbasi P, Athanasopoulou AA, Mazarakioti EC, Gagnon KJ, Teat SJ, Escuer A, Pilkington M, Stamatatos TC. Click chemistry as a route to the synthesis of structurally new and magnetically interesting coordination clusters: a {Ni} complex with a trapezoidal prismatic topology. Dalton Trans 2019; 48:11632-11636. [PMID: 31274137 DOI: 10.1039/c9dt01998g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a new {Ni8} cluster bearing tetrazolate- and azido-bridging ligands, and supported by chelating α-methyl-2-pyridine-methanol (mpmH) groups, is described herein. The reported compound has a unique trapezoidal prismatic topology, resulting from an unexpected in situ click reaction between the MeCN reaction solvent and the N3- ions under mild, room-temperature conditions. Such a click chemistry approach to the preparation of 0-D compounds is relatively unexplored and represents a fruitful strategy for the synthesis of new coordination clusters and molecule-based magnetic materials.
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Affiliation(s)
- Parisa Abbasi
- Department of Chemistry, 1812 Sir Isaac Brock Way, Brock University, L2S 3A1 St. Catharines, Ontario, Canada.
| | - Angeliki A Athanasopoulou
- Department of Chemistry, 1812 Sir Isaac Brock Way, Brock University, L2S 3A1 St. Catharines, Ontario, Canada.
| | - Eleni C Mazarakioti
- Department of Chemistry, 1812 Sir Isaac Brock Way, Brock University, L2S 3A1 St. Catharines, Ontario, Canada.
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Albert Escuer
- Department de Quimica Inorgànica i Orgànica, Secció Inorgànica and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí Franqués 1-11, 08028 Barcelona, Spain
| | - Melanie Pilkington
- Department of Chemistry, 1812 Sir Isaac Brock Way, Brock University, L2S 3A1 St. Catharines, Ontario, Canada.
| | - Theocharis C Stamatatos
- Department of Chemistry, 1812 Sir Isaac Brock Way, Brock University, L2S 3A1 St. Catharines, Ontario, Canada.
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6
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Gagnon KJ, Li J, Medek A, Navamal M, Shi H, Sharpe S. Complex form landscape of a chiral solid solution: where does one form end and the next begin? Acta Crystallogr A Found Adv 2019. [DOI: 10.1107/s010876731909665x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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7
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Gagnon KJ, Lefort N, Poirier SJ, Barnett DA, Surette ME. 5-lipoxygenase-dependent biosynthesis of novel 20:4 n-3 metabolites with anti-inflammatory activity. Prostaglandins Leukot Essent Fatty Acids 2018; 138:38-44. [PMID: 30392579 DOI: 10.1016/j.plefa.2018.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/04/2018] [Accepted: 10/13/2018] [Indexed: 01/05/2023]
Abstract
5-lipoxygenase (5-LO) catalyzes the conversion of arachidonic acid (AA) into pro-inflammatory leukotrienes. N-3 PUFA like eicosapentaenoic acid are subject to a similar metabolism and are precursors of pro-resolving mediators. Stearidonic acid (18:4 n-3, SDA) is a plant source of n-3 PUFA that is elongated to 20:4 n-3, an analogue of AA. However, no 5-LO metabolites of 20:4 n-3 have been reported. In this study, control and 5-LO-expressing HEK293 cells were stimulated in the presence of 20:4 n-3. Metabolites were characterized by LC-MS/MS and their anti-inflammatory properties assessed using AA-induced autocrine neutrophil stimulation and leukotriene B4-mediated chemotaxis. 8‑hydroxy‑9,11,14,17-eicosatetraenoic acid (Δ17-8-HETE) and 8,15-dihydroxy-9,11,13,17-eicosatetraenoic acid (Δ17-8,15-diHETE) were identified as novel metabolites. Δ17-8,15-diHETE production was inhibited by the leukotriene A4 hydrolase inhibitor SC 57461A. Autocrine neutrophil leukotriene stimulation and neutrophil chemotaxis, both BLT1-dependent processes, were inhibited by Δ17-8,15-diHETE at low nM concentrations. These data support an anti-inflammatory role for Δ17-8,15-diHETE, a novel 5-LO product.
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Key Words
- AA, arachidonic acid
- ADA, adenosine deaminase
- ALA, alpha-linolenic acid
- Abbreviations: 19-OH-PGB(2), 19(R)-hydroxy-prostaglandin B(2)
- BLT1, leukotriene B(4) receptor 1
- DHA, docosahexaenoic acid
- DPA, docosapentaenoic acid
- ETA, eicosatetraenoic acid
- Eicosanoids
- EtOH, ethanol
- HpETE, hydroperoxyeicosatetraenoic acid
- Inflammation
- LO, lipoxygenase
- LTA(4), leukotriene A(4)
- LTB(4), leukotriene B(4)
- LTC(4), leukotriene C(4)
- Leukotrienes
- Lipid mediators
- MeOH, methanol
- NEM, N-ethylmaleimide
- Neutrophils
- RP-HPLC, reverse phase-HPLC
- SDA, stearidonic acid
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Affiliation(s)
- K J Gagnon
- Départment de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada
| | - N Lefort
- Départment de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada
| | - S J Poirier
- Départment de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada; Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - D A Barnett
- Atlantic Cancer Research Institute, Moncton, NB, Canada
| | - M E Surette
- Départment de Chimie et Biochimie, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada.
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8
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Alemayehu A, McCormick LJ, Gagnon KJ, Borisov SM, Ghosh A. Stable Platinum(IV) Corroles: Synthesis, Molecular Structure, and Room-Temperature Near-IR Phosphorescence. ACS Omega 2018; 3:9360-9368. [PMID: 31459069 PMCID: PMC6645213 DOI: 10.1021/acsomega.8b01149] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 08/01/2018] [Indexed: 05/17/2023]
Abstract
A series of stable Pt(IV) corrole complexes with the general formula PtIV[TpXPC](m/p-C6H4CN)(py), where TpXPC3- is the trianion of a tris(p-X-phenyl)corrole and X = CF3, H, and CH3, has been synthesized, affording key physicochemical data on a rare and elusive class of metallocorroles. Single-crystal X-ray structures of two of the complexes revealed very short equatorial Pt-N distances of 1.94-1.97 Å, an axial Pt-C distance of ∼2.03 Å, and an axial Pt-N distance of ∼2.22 Å. The complexes exhibit Soret maxima at ∼430 nm, which are essentially independent of the meso-aryl para substituents, and strong Q bands with the most intense peak at 595-599 nm. The substituent-independent Soret maxima are consistent with an innocent PtIV-corrole3- description for the complexes. The low reduction potentials (-1.45 ± 0.08 V vs saturated calomel reference electrode) also support a highly stable Pt(IV) ground state as opposed to a noninnocent corrole•2- description. The reductions, however, are irreversible, which suggests that they involve concomitant cleavage of the Pt-aryl bond. Unlike Pt(IV) porphyrins, two of the complexes, PtIV[TpXPC](m-C6H4CN)(py) (X = CF3 and CH3), were found to exhibit room-temperature near-IR phosphorescence with emission maxima at 813 and 826 nm, respectively. The quantum yield of ∼0.3% is comparable to those observed for six-coordinate Ir(III) corroles.
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Affiliation(s)
- Abraham
B. Alemayehu
- Department
of Chemistry, UiT—The Arctic University
of Norway, N-9037 Tromsø, Norway
| | - Laura J. McCormick
- Advanced
Light Source, Lawrence Berkeley National
Laboratory, Berkeley, California 94720-8229, United States
| | - Kevin J. Gagnon
- Advanced
Light Source, Lawrence Berkeley National
Laboratory, Berkeley, California 94720-8229, United States
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Abhik Ghosh
- Department
of Chemistry, UiT—The Arctic University
of Norway, N-9037 Tromsø, Norway
- E-mail:
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9
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Thomas KE, Gagnon KJ, MCormick LJ, Ghosh A. Molecular structure of gold 2,3,7,8,12,13,17,18-octabromo-5,10,15-tris(4′-pentafluorosulfanylphenyl)corrole: Potential insights into the insolubility of gold octabromocorroles. J PORPHYR PHTHALOCYA 2018. [DOI: 10.1142/s1088424618500815] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
X-ray structures of gold corroles, which are still rather uncommon, afford significant insights into intermolecular interactions involving Au(III), a subject that has been much less studied than aurophilic and metallophilic interactions involving Au(I). The X-ray structure of gold [Formula: see text]-octabromo-meso-tris(para-pentafluorosulfanylphenyl)corrole, reported herein, has revealed two Au···Br interactions (∼4.2 Å) per Au atom. We suggest that analogous but somewhat stronger Au···Br interactions are a key factor underlying the remarkable insolubility of gold octabromocorrole derivatives.
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Affiliation(s)
- Kolle E. Thomas
- Department of Chemistry, UiT — The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Kevin J. Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229, USA
| | - Laura J. MCormick
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229, USA
| | - Abhik Ghosh
- Department of Chemistry, UiT — The Arctic University of Norway, N-9037 Tromsø, Norway
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10
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Ganguly S, MCormick LJ, Conradie J, Gagnon KJ, Sarangi R, Ghosh A. Electronic Structure of Manganese Corroles Revisited: X-ray Structures, Optical and X-ray Absorption Spectroscopies, and Electrochemistry as Probes of Ligand Noninnocence. Inorg Chem 2018; 57:9656-9669. [DOI: 10.1021/acs.inorgchem.8b00537] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sumit Ganguly
- Department of Chemistry, UiT—The Arctic University of Norway, Tromsø N-9037, Norway
| | - Laura J. MCormick
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Jeanet Conradie
- Department of Chemistry, University of the Free State, Bloemfontein 9300, Republic of South Africa
| | - Kevin J. Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Ritimukta Sarangi
- Structural Molecular Biology (SMB), Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, Menlo Park, California 94306, United States
| | - Abhik Ghosh
- Department of Chemistry, UiT—The Arctic University of Norway, Tromsø N-9037, Norway
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11
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Ganguly S, Conradie J, Bendix J, Gagnon KJ, McCormick LJ, Ghosh A. Electronic Structure of Cobalt–Corrole–Pyridine Complexes: Noninnocent Five-Coordinate Co(II) Corrole–Radical States. J Phys Chem A 2017; 121:9589-9598. [DOI: 10.1021/acs.jpca.7b09440] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sumit Ganguly
- Department
of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Jeanet Conradie
- Department
of Chemistry, University of the Free State, 9300 Bloemfontein, Republic of South Africa
| | - Jesper Bendix
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Kevin J. Gagnon
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Laura J. McCormick
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Abhik Ghosh
- Department
of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
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12
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Ganguly S, Renz D, Giles LJ, Gagnon KJ, McCormick LJ, Conradie J, Sarangi R, Ghosh A. Cobalt- and Rhodium-Corrole-Triphenylphosphine Complexes Revisited: The Question of a Noninnocent Corrole. Inorg Chem 2017; 56:14788-14800. [DOI: 10.1021/acs.inorgchem.7b01828] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sumit Ganguly
- Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Diemo Renz
- Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Logan J. Giles
- Structural Molecular Biology, Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94306, United States
| | - Kevin J. Gagnon
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Laura J. McCormick
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
| | - Jeanet Conradie
- Department of Chemistry, University of the Free State, 9300 Bloemfontein, Republic of South Africa
| | - Ritimukta Sarangi
- Structural Molecular Biology, Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94306, United States
| | - Abhik Ghosh
- Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
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13
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Coletta M, McLellan R, Sanz S, Gagnon KJ, Teat SJ, Brechin EK, Dalgarno SJ. A New Family of 3
d
–4
f
Bis‐Calix[4]arene‐Supported Clusters. Chemistry 2017; 23:14073-14079. [DOI: 10.1002/chem.201703197] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
| | - Ross McLellan
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Kevin J. Gagnon
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 947240 USA
| | - Simon J. Teat
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 947240 USA
| | - Euan K. Brechin
- EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Scott J. Dalgarno
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
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14
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Gonzalez MI, Mason JA, Bloch ED, Teat SJ, Gagnon KJ, Morrison GY, Queen WL, Long JR. Structural characterization of framework-gas interactions in the metal-organic framework Co 2(dobdc) by in situ single-crystal X-ray diffraction. Chem Sci 2017; 8:4387-4398. [PMID: 28966783 PMCID: PMC5580307 DOI: 10.1039/c7sc00449d] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/10/2017] [Indexed: 11/21/2022] Open
Abstract
The crystallographic characterization of framework-guest interactions in metal-organic frameworks allows the location of guest binding sites and provides meaningful information on the nature of these interactions, enabling the correlation of structure with adsorption behavior. Here, techniques developed for in situ single-crystal X-ray diffraction experiments on porous crystals have enabled the direct observation of CO, CH4, N2, O2, Ar, and P4 adsorption in Co2(dobdc) (dobdc4- = 2,5-dioxido-1,4-benzenedicarboxylate), a metal-organic framework bearing coordinatively unsaturated cobalt(ii) sites. All these molecules exhibit such weak interactions with the high-spin cobalt(ii) sites in the framework that no analogous molecular structures exist, demonstrating the utility of metal-organic frameworks as crystalline matrices for the isolation and structural determination of unstable species. Notably, the Co-CH4 and Co-Ar interactions observed in Co2(dobdc) represent, to the best of our knowledge, the first single-crystal structure determination of a metal-CH4 interaction and the first crystallographically characterized metal-Ar interaction. Analysis of low-pressure gas adsorption isotherms confirms that these gases exhibit mainly physisorptive interactions with the cobalt(ii) sites in Co2(dobdc), with differential enthalpies of adsorption as weak as -17(1) kJ mol-1 (for Ar). Moreover, the structures of Co2(dobdc)·3.8N2, Co2(dobdc)·5.9O2, and Co2(dobdc)·2.0Ar reveal the location of secondary (N2, O2, and Ar) and tertiary (O2) binding sites in Co2(dobdc), while high-pressure CO2, CO, CH4, N2, and Ar adsorption isotherms show that these binding sites become more relevant at elevated pressures.
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Affiliation(s)
- Miguel I Gonzalez
- Department of Chemistry , University of California , Berkeley , California 94720-1462 , USA .
| | - Jarad A Mason
- Department of Chemistry , University of California , Berkeley , California 94720-1462 , USA .
| | - Eric D Bloch
- Department of Chemistry , University of California , Berkeley , California 94720-1462 , USA .
| | - Simon J Teat
- Advanced Light Source , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
| | - Kevin J Gagnon
- Advanced Light Source , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
| | - Gregory Y Morrison
- Advanced Light Source , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
| | - Wendy L Queen
- The Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
- École Polytechnique Fédérale de Lausanne (EPFL) , Institut des Sciences et Ingénierie Chimiques , CH 1051 Sion , Switzerland
| | - Jeffrey R Long
- Department of Chemistry , University of California , Berkeley , California 94720-1462 , USA .
- Department of Chemical and Biomolecular Engineering , University of California , Berkeley , California 94720-1462 , USA
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 94720 , USA
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15
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Thomas KE, Beavers CM, Gagnon KJ, Ghosh A. β-Octabromo- and β-Octakis(trifluoromethyl)isocorroles: New Sterically Constrained Macrocyclic Ligands. ChemistryOpen 2017; 6:402-409. [PMID: 28638773 PMCID: PMC5474668 DOI: 10.1002/open.201700035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Indexed: 11/19/2022] Open
Abstract
Presented herein is a study of the acid-induced demetalation of two sterically hindered copper corroles, Cu β-octabromo-meso-triphenylcorrole (Cu[Br8TPC]) and β-octakis(trifluoromethyl)-meso-tris(p-methoxyphenyl)corrole (Cu[(CF3)8TpOMePC]). Unlike reductive demetalation, which affords the free-base β-octabromocorrole, demetalation of Cu[Br8TPC] under non- reductive conditions (CHCl3/H2SO4) resulted in moderate yields of free-base 5- and 10-hydroxy isocorroles. The isomeric free bases could be complexed to CoII and NiII, affording stable complexes. Only reductive demetalation was found to work for Cu[(CF3)8TpOMePC], affording a highly saddled, hydrated corrole, H3[5-OH,10-H-(CF3)8TpOMePC], where the elements of water had added across C5 and C10. Interaction of this novel free base with CoII resulted in Co[iso-10-H-[CF3)8TpOMePC], a CoII 10-hydro isocorrole. The new metal complexes were all characterized by single-crystal X-ray diffraction analysis and, despite their sterically hindered nature, were found to exhibit almost perfectly planar isocorrole cores.
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Affiliation(s)
- Kolle E. Thomas
- Department of Chemistry and Center for Theoretical & Computational ChemistryUiT—The Arctic University of Norway9037TromsøNorway
| | - Christine M. Beavers
- Advanced Light SourceLawrence Berkeley National LaboratoryBerkeleyCA94720-8229USA
| | - Kevin J. Gagnon
- Advanced Light SourceLawrence Berkeley National LaboratoryBerkeleyCA94720-8229USA
| | - Abhik Ghosh
- Department of Chemistry and Center for Theoretical & Computational ChemistryUiT—The Arctic University of Norway9037TromsøNorway
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16
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Alemayehu AB, Vazquez-Lima H, Gagnon KJ, Ghosh A. Stepwise Deoxygenation of Nitrite as a Route to Two Families of Ruthenium Corroles: Group 8 Periodic Trends and Relativistic Effects. Inorg Chem 2017; 56:5285-5294. [PMID: 28422487 DOI: 10.1021/acs.inorgchem.7b00377] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Given the many applications of ruthenium porphyrins, the rarity of ruthenium corroles and the underdeveloped state of their chemistry are clearly indicative of an area ripe for significant breakthroughs. The tendency of ruthenium corroles to form unreactive metal-metal-bonded dimers has been recognized as a key impediment in this area. Herein, by exposing free-base meso-tris(p-X-phenyl)corroles, H3[TpXPC] (X = CF3, H, Me, and OMe), and [Ru(COD)Cl2]x in refluxing 2-methoxyethanol to nitrite, we have been able to reliably intercept the series Ru[TpXPC](NO) in a matter of seconds to minutes and subsequently RuVI[TpXPC](N), the products of a second deoxygenation, over some 16 h. Two of the RuVIN complexes and one ruthenium corrole dimer could be crystallographically analyzed; the Ru-Nnitrido distance was found to be ∼1.61 Å, consistent with the triple-bonded character of the RuVIN units and essentially identical with the Os-Nnitrido distance in analogous osmium corroles. Spectroscopic and density functional theory (DFT) calculations suggest that the RuNO corroles are best viewed as innocent {RuNO}6 complexes, whereas the analogous FeNO corroles are noninnocent, i.e., best viewed as {FeNO}7-corrole•2-. Both RuVIN and OsVIN corroles exhibit sharp Soret bands, suggestive of an innocent macrocycle. A key difference between the two metals is that the Soret maxima of the OsVIN corroles are red-shifted some 25 nm relative to those of the RuVIN complexes. Careful time-dependent DFT studies indicate that this difference is largely attributable to relativistic effects in OsVIN corroles. The availability of two new classes of mononuclear ruthenium corroles potentially opens the door to new applications, in such areas as catalysis and cancer therapy.
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Affiliation(s)
- Abraham B Alemayehu
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT-The Arctic University of Norway , N-9037 Tromsø, Norway
| | - Hugo Vazquez-Lima
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT-The Arctic University of Norway , N-9037 Tromsø, Norway
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720-8229, United States
| | - Abhik Ghosh
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT-The Arctic University of Norway , N-9037 Tromsø, Norway
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17
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Knichal JV, Gee WJ, Cameron CA, Skelton JM, Gagnon KJ, Teat SJ, Wilson CC, Raithby PR, Burrows AD. Exploring Structure–Property Relationships of Silver 4‐(Phenylethynyl)pyridine Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601298] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jane V. Knichal
- Department of Chemistry University of Bath Claverton Down BA2 7AY Bath UK
| | - William J. Gee
- Department of Chemistry University of Bath Claverton Down BA2 7AY Bath UK
| | | | | | - Kevin J. Gagnon
- Station 11.3.1 Advanced Light Source Lawrence Berkeley National Laboratory 94720 Berkeley CA USA
| | - Simon J. Teat
- Station 11.3.1 Advanced Light Source Lawrence Berkeley National Laboratory 94720 Berkeley CA USA
| | - Chick C. Wilson
- Department of Chemistry University of Bath Claverton Down BA2 7AY Bath UK
| | - Paul R. Raithby
- Department of Chemistry University of Bath Claverton Down BA2 7AY Bath UK
| | - Andrew D. Burrows
- Department of Chemistry University of Bath Claverton Down BA2 7AY Bath UK
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18
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Norheim H, Schneider C, Gagnon KJ, Ghosh A. One-Pot Synthesis of a bis-Pocket Corrole through a 14-fold Bromination Reaction. ChemistryOpen 2017; 6:221-225. [PMID: 28413755 PMCID: PMC5390803 DOI: 10.1002/open.201600168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/22/2017] [Indexed: 11/08/2022] Open
Abstract
A one-pot protocol, effecting 14-fold bromination with elemental bromine, has afforded copper β-octabromo-meso-tris(2,6-dibromo-3,5-dimethoxyphenyl)corrole, a new bis-pocket metallocorrole. The Cu complex underwent smooth demetalation under reductive conditions, affording the free corrole ligand, which in turn could be readily complexed to MnIII and AuIII. A single-crystal X-ray structure was obtained for the MnIII complex.
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Affiliation(s)
| | | | - Kevin J. Gagnon
- Advanced Light SourceLawrence Berkeley National LaboratoryBerkeleyCA94720-8229USA
| | - Abhik Ghosh
- Department of ChemistryUiT—The Arctic University of Norway9037TromsøNorway
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19
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Kagalwala HN, Tong L, Zong R, Kohler L, Ahlquist MSG, Fan T, Gagnon KJ, Thummel RP. Evidence for Oxidative Decay of a Ru-Bound Ligand during Catalyzed Water Oxidation. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03278] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Husain N. Kagalwala
- Department
of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Lianpeng Tong
- Department
of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Ruifa Zong
- Department
of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Lars Kohler
- Department
of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Mårten S. G. Ahlquist
- Division of Theoretical Chemistry & Biology, School of Biotechnology, KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - Ting Fan
- Division of Theoretical Chemistry & Biology, School of Biotechnology, KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - Kevin J. Gagnon
- Advanced
Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - Randolph P. Thummel
- Department
of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
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20
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Lu Z, Godfrey HGW, da Silva I, Cheng Y, Savage M, Tuna F, McInnes EJL, Teat SJ, Gagnon KJ, Frogley MD, Manuel P, Rudić S, Ramirez-Cuesta AJ, Easun TL, Yang S, Schröder M. Modulating supramolecular binding of carbon dioxide in a redox-active porous metal-organic framework. Nat Commun 2017; 8:14212. [PMID: 28194014 PMCID: PMC5316804 DOI: 10.1038/ncomms14212] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 12/05/2016] [Indexed: 11/09/2022] Open
Abstract
Hydrogen bonds dominate many chemical and biological processes, and chemical modification enables control and modulation of host–guest systems. Here we report a targeted modification of hydrogen bonding and its effect on guest binding in redox-active materials. MFM-300(VIII) {[VIII2(OH)2(L)], LH4=biphenyl-3,3′,5,5′-tetracarboxylic acid} can be oxidized to isostructural MFM-300(VIV), [VIV2O2(L)], in which deprotonation of the bridging hydroxyl groups occurs. MFM-300(VIII) shows the second highest CO2 uptake capacity in metal-organic framework materials at 298 K and 1 bar (6.0 mmol g−1) and involves hydrogen bonding between the OH group of the host and the O-donor of CO2, which binds in an end-on manner, =1.863(1) Å. In contrast, CO2-loaded MFM-300(VIV) shows CO2 bound side-on to the oxy group and sandwiched between two phenyl groups involving a unique ···c.g.phenyl interaction [3.069(2), 3.146(3) Å]. The macroscopic packing of CO2 in the pores is directly influenced by these primary binding sites. Gaining molecular-level insight into host–guest binding interactions is fundamentally important, but experimentally challenging. Here, Schröder and co-workers study CO2–host hydrogen bonding interactions in a pair of isostructural redox-active VIII/VIV MOFs using neutron scattering and diffraction techniques.
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Affiliation(s)
- Zhenzhong Lu
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Harry G W Godfrey
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Ivan da Silva
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, UK
| | - Yongqiang Cheng
- The Chemical and Engineering Materials Division (CEMD), Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Mathew Savage
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Floriana Tuna
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Eric J L McInnes
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Mark D Frogley
- Diamond Light Source, Harwell Science Campus, Oxfordshire OX11 0DE, UK
| | - Pascal Manuel
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, UK
| | - Svemir Rudić
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, UK
| | - Anibal J Ramirez-Cuesta
- The Chemical and Engineering Materials Division (CEMD), Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Timothy L Easun
- School of Chemistry, Cardiff University, Cardiff CF10 3XQ, UK
| | - Sihai Yang
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Martin Schröder
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
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21
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Fortunelli A, Sementa L, Thanthirige VD, Jones TC, Stener M, Gagnon KJ, Dass A, Ramakrishna G. Au 21S(SAdm) 15: An Anisotropic Gold Nanomolecule. Optical and Photoluminescence Spectroscopy and First-Principles Theoretical Analysis. J Phys Chem Lett 2017; 8:457-462. [PMID: 28045269 DOI: 10.1021/acs.jpclett.6b02810] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We introduce a class of gold nanomolecules exhibiting anisotropy as a major feature by reporting steady-state and time-resolved photoluminescence and anisotropy measurements and in-depth theoretical analysis of energetics and optical response of a recently synthesized Au21S(SAdm)15 nanomolecule (SAdm = adamantanethiol). Starting from single-crystal X-ray data showing that Au21S(SAdm)15 exhibits a symmetry-broken structure, we unambiguously demonstrate how this translates into a striking anisotropy of its properties, for example, of its (chiro)optical absorption spectrum of great promise for sensing, optoelectronic, and electrochemical applications, and argue about the abundance and general significance of this class of compounds.
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Affiliation(s)
| | - Luca Sementa
- CNR-ICCOM, Consiglio Nazionale delle Ricerche , via G. Moruzzi 1, 56124 Pisa, Italy
| | | | - Tanya C Jones
- Department of Chemistry and Biochemistry, University of Mississippi , Oxford, Mississippi 38677, United States
| | - Mauro Stener
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste , 34127 Trieste, Italy
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Amala Dass
- Department of Chemistry and Biochemistry, University of Mississippi , Oxford, Mississippi 38677, United States
| | - Guda Ramakrishna
- Department of Chemistry, Western Michigan University , Kalamazoo, Michigan 49008, United States
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22
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Anderson SL, Gładysiak A, Boyd PG, Ireland CP, Miéville P, Tiana D, Vlaisavljevich B, Schouwink P, van Beek W, Gagnon KJ, Smit B, Stylianou KC. Formation pathways of metal–organic frameworks proceeding through partial dissolution of the metastable phase. CrystEngComm 2017. [DOI: 10.1039/c7ce00589j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Cols JMEP, Taylor CE, Gagnon KJ, Teat SJ, McIntosh RD. Well-defined Ti 4 pre-catalysts for the ring-opening polymerisation of lactide. Dalton Trans 2016; 45:17729-17738. [PMID: 27766320 DOI: 10.1039/c6dt03842e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The synthesis and full characterisation of four discrete tetrametallic titanium complexes is reported. These well-defined compounds are isostructural in the solid state and share the same general formula: Ti4(μ-O)2L4 (L = 1, 2, 3 or 4). Using a combination of NMR techniques the complexes are found to be stable in solution, even at elevated temperatures. Further studies show that the carboxylate moieties of the supporting amine bis(phenolate) ligands can be displaced by a more strongly coordinating solvent. This reversible process causes the coordinatively saturated Ti4(μ-O)2L4 complexes to separate into two Ti2(μ-O)L2 subunits which we envisaged would be catalytically active. Proof-of-concept experiments establish that all four of these complexes display catalytic activity in the ring-opening polymerisation of rac-lactide. These aggregates can therefore be viewed as air and moisture stable pre-catalysts for a range of reactions.
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Affiliation(s)
- Jean-Marie E P Cols
- Institute of Chemical Sciences Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK.
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24
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Capar J, Zonneveld J, Berg S, Isaksson J, Gagnon KJ, Thomas KE, Ghosh A. Demetalation of copper undecaarylcorroles: Molecular structures of a free-base undecaarylisocorrole and a gold undecaarylcorrole. J Inorg Biochem 2016; 162:146-153. [PMID: 27394061 DOI: 10.1016/j.jinorgbio.2016.06.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/22/2016] [Accepted: 06/23/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Jan Capar
- Department of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
| | - Job Zonneveld
- Department of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
| | - Steffen Berg
- Department of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
| | - Johan Isaksson
- Department of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229, USA
| | - Kolle E Thomas
- Department of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway.
| | - Abhik Ghosh
- Department of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway.
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25
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Perlepe PS, Cunha-Silva L, Bekiari V, Gagnon KJ, Teat SJ, Escuer A, Stamatatos TC. Structural diversity in Ni(II) cluster chemistry: Ni5, Ni6, and {NiNa2}n complexes bearing the Schiff-base ligand N-naphthalidene-2-amino-5-chlorobenzoic acid. Dalton Trans 2016; 45:10256-70. [PMID: 27240998 DOI: 10.1039/c6dt01162d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The employment of the fluorescent bridging and chelating ligand N-naphthalidene-2-amino-5-chlorobenzoic acid (nacbH2) in Ni(II) cluster chemistry has led to a series of pentanuclear and hexanuclear compounds with different structural motifs, magnetic and optical properties, as well as an interesting 1-D coordination polymer. Synthetic parameters such as the inorganic anion present in the NiX2 starting materials (X = ClO4(-) or Cl(-)), the reaction solvent and the nature of the organic base employed for the deprotonation of nacbH2 were proved to be structure-directing components. Undoubtedly, the reported results demonstrate the rich coordination chemistry of nacbH2 in the presence of Ni(II) metal ions and the ability of this chelate to adopt a variety of different modes, thus fostering the formation of high-nuclearity molecules with many physical properties.
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Affiliation(s)
- Panagiota S Perlepe
- Department of Chemistry, Brock University, St. Catharines, Ontario L2S 3A1, Canada.
| | - Luís Cunha-Silva
- REQUIMTE/LAQV & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Vlasoula Bekiari
- Department of Aquaculture and Fisheries Management, Technological Educational Institute of Western Greece, 30 200 Messolonghi, Greece
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Albert Escuer
- Departament de Quimica Inorganica and Institut de Nanociencia i Nanotecnologia (IN2UB), Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
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26
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Coletta M, McLellan R, Murphy P, Leube BT, Sanz S, Clowes R, Gagnon KJ, Teat SJ, Cooper AI, Paterson MJ, Brechin EK, Dalgarno SJ. Bis-Calix[4]arenes: From Ligand Design to the Directed Assembly of a Metal-Organic Trigonal Antiprism. Chemistry 2016; 22:8791-5. [PMID: 27166930 DOI: 10.1002/chem.201600762] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Indexed: 11/05/2022]
Abstract
Calix[4]arenes (C[4]s) are versatile platforms for the construction of polymetallic clusters containing paramagnetic metal ions. Synthetic modification at the C[4] methylene bridge allows for the design of bis-C[4]s that, depending on the linker employed, can be used to either dictate which clusters can be formed or direct the assembly of a new metal-organic polyhedron (MOP). The assembly resulting from the latter approach displays thermal stability and uptake of N2 or H2 gas, confirming that this is a viable route to the synthesis of new, functional supramolecular architectures.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Ross McLellan
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Paul Murphy
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Bernhard T Leube
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Rob Clowes
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 947240, USA
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 947240, USA
| | - Andrew I Cooper
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Martin J Paterson
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK.
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27
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Abstract
The oxidative metalation method, involving the interaction of free-base meso-triarylcorroles and W(CO)6 in refluxing decalin, led to a set of three tungsten(VI) biscorroles, the first homoleptic sandwich compounds involving corroles. Single-crystal X-ray structures of two of the complexes revealed square-antiprismatic coordination and strongly domed corroles with long W-N distances of 2.15-2.22 Å and a substantial displacement of ∼1.17 Å of the metal relative to the mean N4 planes of the ligands. The structures correspond to approximate C2 symmetry and are thus chiral. DFT calculations strongly indicate that the enantiomers are configurationally stable and hence amenable to chiral resolution. Their other notable properties include a strongly blueshifted Soret band at (357±2) nm, a relatively intense π→W(dz2 ) near-IR feature at (781±3) nm, and a low electrochemical HOMO-LUMO gap of approximately 1.3 V. The results obtained herein suggest that metallobiscorroles may emerge as a new class of inherently chiral chromophores with novel optical and electrochemical properties.
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Affiliation(s)
- Abraham B Alemayehu
- Department of Chemistry, UiT - The Arctic University of Norway, 9037, Tromsø, Norway
| | - Hugo Vazquez-Lima
- Department of Chemistry, UiT - The Arctic University of Norway, 9037, Tromsø, Norway
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229, USA
| | - Abhik Ghosh
- Department of Chemistry, UiT - The Arctic University of Norway, 9037, Tromsø, Norway.
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28
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland, UK
| | - Ross McLellan
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland, UK
| | - Jean-Marie Cols
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland, UK
| | | | - Simon J. Teat
- Lawerence Berkeley National Laboratory, Berkeley, CA, USA
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, Edinburgh, Scotland, UK
| | - Scott J. Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland, UK
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29
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Perlepe PS, Cunha-Silva L, Gagnon KJ, Teat SJ, Lampropoulos C, Escuer A, Stamatatos TC. “Ligands-with-Benefits”: Naphthalene-Substituted Schiff Bases Yielding New NiII Metal Clusters with Ferromagnetic and Emissive Properties and Undergoing Exciting Transformations. Inorg Chem 2016; 55:1270-7. [DOI: 10.1021/acs.inorgchem.5b02492] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Panagiota S. Perlepe
- Department of Chemistry, Brock University, St. Catharines, Ontario L2S 3A1, Canada
| | - Luís Cunha-Silva
- REQUIMTE/LAQV and Department of Chemistry
and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Kevin J. Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Simon J. Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Christos Lampropoulos
- Department
of Chemistry, University of North Florida, Jacksonville, Florida 32224, United States
| | - Albert Escuer
- Departament de Quimica Inorganica and Institut de Nanociencia i Nanotecnologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
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30
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Ansari SA, Yang Y, Zhang Z, Gagnon KJ, Teat SJ, Luo S, Rao L. Complexation of Lanthanides with Glutaroimide-dioxime: Binding Strength and Coordination Modes. Inorg Chem 2016; 55:1315-23. [DOI: 10.1021/acs.inorgchem.5b02653] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seraj A. Ansari
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Radiochemistry
Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - Yanqiu Yang
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Institute
of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900, China
| | - Zhicheng Zhang
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kevin J. Gagnon
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Simon J. Teat
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Shunzhong Luo
- Institute
of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900, China
| | - Linfeng Rao
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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31
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Norheim HK, Capar J, Einrem RF, Gagnon KJ, Beavers CM, Vazquez-Lima H, Ghosh A. Ligand noninnocence in FeNO corroles: insights from β-octabromocorrole complexes. Dalton Trans 2016; 45:681-9. [DOI: 10.1039/c5dt03947a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With a noninnocent {FeNO}7-(corrole˙2−) formulation, the first FeNO octabromocorrole derivatives deepen our appreciation of ligand noninnocence.
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Affiliation(s)
- Hans-Kristian Norheim
- Department of Chemistry and Center for Theoretical and Computational Chemistry
- UiT – The Arctic University of Norway
- 9037 Tromsø
- Norway
| | - Jan Capar
- Department of Chemistry and Center for Theoretical and Computational Chemistry
- UiT – The Arctic University of Norway
- 9037 Tromsø
- Norway
| | - Rune F. Einrem
- Department of Chemistry and Center for Theoretical and Computational Chemistry
- UiT – The Arctic University of Norway
- 9037 Tromsø
- Norway
| | - Kevin J. Gagnon
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | | | - Hugo Vazquez-Lima
- Department of Chemistry and Center for Theoretical and Computational Chemistry
- UiT – The Arctic University of Norway
- 9037 Tromsø
- Norway
| | - Abhik Ghosh
- Department of Chemistry and Center for Theoretical and Computational Chemistry
- UiT – The Arctic University of Norway
- 9037 Tromsø
- Norway
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32
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Coletta M, McLellan R, Waddington A, Sanz S, Gagnon KJ, Teat SJ, Brechin EK, Dalgarno SJ. Core expansion of bis-calix[4]arene-supported clusters. Chem Commun (Camb) 2016; 52:14246-14249. [DOI: 10.1039/c6cc08059f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stoichiometric control allows for remarkable expansion of the cores of two known bis-calix[4]arene-supported clusters, with concomitant changes to the magnetic properties.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Ross McLellan
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Amy Waddington
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
| | - Kevin J. Gagnon
- Station 11.3.1
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Simon J. Teat
- Station 11.3.1
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Euan K. Brechin
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
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33
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Ryan JD, Gagnon KJ, Teat SJ, McIntosh RD. Flexible macrocycles as versatile supports for catalytically active metal clusters. Chem Commun (Camb) 2016; 52:9071-3. [DOI: 10.1039/c6cc00478d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we present three structurally diverse clusters stabilised by the same macrocyclic polyphenol; t-butylcalix[8]arene.
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Affiliation(s)
- Jason D. Ryan
- Institute of Chemical Sciences
- Heriot-Watt University
- Riccarton
- UK
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34
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Einrem RF, Gagnon KJ, Alemayehu AB, Ghosh A. Metal-Ligand Misfits: Facile Access to Rhenium-Oxo Corroles by Oxidative Metalation. Chemistry 2015; 22:517-20. [PMID: 26639951 DOI: 10.1002/chem.201504307] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Indexed: 11/08/2022]
Abstract
With the exception of a single accidental synthesis, rhenium corroles are unknown, but of great interest as catalysts and potential radiopharmaceuticals. Oxidative metalation of meso-triarylcorroles with [Re2 (CO)10 ] in refluxing decalin has provided a facile and relatively high-yielding route to rhenium(V)-oxo corroles. The complexes synthesized could all be fully characterized by single-crystal X-ray structure analyses.
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Affiliation(s)
- Rune F Einrem
- Department of Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø (Norway)
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229 (USA)
| | - Abraham B Alemayehu
- Department of Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø (Norway).
| | - Abhik Ghosh
- Department of Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø (Norway).
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35
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Capar J, Berg S, Thomas KE, Beavers CM, Gagnon KJ, Ghosh A. Improved syntheses of β-octabromo-meso-triarylcorrole derivatives. J Inorg Biochem 2015; 153:162-166. [DOI: 10.1016/j.jinorgbio.2015.07.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 07/13/2015] [Accepted: 07/19/2015] [Indexed: 11/15/2022]
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36
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Thomas KE, Vazquez-Lima H, Fang Y, Song Y, Gagnon KJ, Beavers CM, Kadish KM, Ghosh A. Ligand Noninnocence in Coinage Metal Corroles: A Silver Knife-Edge. Chemistry 2015. [DOI: 10.1002/chem.201503939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Thomas KE, Vazquez-Lima H, Fang Y, Song Y, Gagnon KJ, Beavers CM, Kadish KM, Ghosh A. Cover Picture: Ligand Noninnocence in Coinage Metal Corroles: A Silver Knife-Edge (Chem. Eur. J. 47/2015). Chemistry 2015. [DOI: 10.1002/chem.201584701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Affiliation(s)
- Ivar K. Thomassen
- Department
of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
| | - Hugo Vazquez-Lima
- Department
of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
| | - Kevin J. Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720-8229, United States
| | - Abhik Ghosh
- Department
of Chemistry and Center for Theoretical and Computational Chemistry, University of Tromsø, N-9037 Tromsø, Norway
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39
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Wickramasinghe LD, Zhou R, Zong R, Vo P, Gagnon KJ, Thummel RP. Iron Complexes of Square Planar Tetradentate Polypyridyl-Type Ligands as Catalysts for Water Oxidation. J Am Chem Soc 2015; 137:13260-3. [DOI: 10.1021/jacs.5b08856] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lanka D. Wickramasinghe
- Department
of Chemistry, 112 Fleming
Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Rongwei Zhou
- Department
of Chemistry, 112 Fleming
Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Ruifa Zong
- Department
of Chemistry, 112 Fleming
Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Pascal Vo
- Department
of Chemistry, 112 Fleming
Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Kevin J. Gagnon
- Advanced Light Source, Lawrence Berkeley National Lab, 1 Cyclotron Rd., Berkeley, California 94720, United States
| | - Randolph P. Thummel
- Department
of Chemistry, 112 Fleming
Building, University of Houston, Houston, Texas 77204-5003, United States
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40
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Fairbairn RE, Teat SJ, Gagnon KJ, Dalgarno SJ. A Convenient Synthetic Route to Partial-Cone p-Carboxylatocalix[4]arenes. Chimia (Aarau) 2015; 69:516-9. [DOI: 10.2533/chimia.2015.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
p-Carboxylatocalix[n]arenes have emerged as useful building blocks for the construction of a diverse range of supramolecular assemblies. A convenient route to a p-carboxylatocalix[4]arene that is locked in a partial-cone conformation is presented. The conformation
gives the molecule markedly different topological directionality relative to those previously used in self- and metal-directed assembly studies.
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41
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Thomas KE, Vazquez-Lima H, Fang Y, Song Y, Gagnon KJ, Beavers CM, Kadish KM, Ghosh A. Ligand Noninnocence in Coinage Metal Corroles: A Silver Knife-Edge. Chemistry 2015; 21:16839-47. [PMID: 26345592 DOI: 10.1002/chem.201502150] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 11/11/2022]
Abstract
A silver β-octabromo-meso-triarylcorrole has been found to exhibit a strongly saddled geometry, providing the first instance of a strongly saddled corrole complex involving a metal other than copper. The Soret maxima of the Ag octabromocorroles also redshift markedly in response to increasingly electron-donating para substituents on the meso-aryl groups. In both these respects, the Ag octabromocorroles differ from simple Ag triarylcorrole derivatives, which exhibit only mild saddling and substituent-insensitive Soret maxima. These results have been rationalized in terms of an innocent M(III)-corrole(3-) description for the simple Ag corroles and a noninnocent M(II)-corrole(·2-) description for the Ag octabromocorroles. In contrast, all copper corroles are thought to be noninnocent, while all gold corroles are innocent. Uniquely among metallocorroles, silver corroles thus seem poised on a knife-edge, so to speak, between innocent and noninnocent electronic structures and may tip either way, depending on the exact nature of the corrole ligand.
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Affiliation(s)
- Kolle E Thomas
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø (Norway)
| | - Hugo Vazquez-Lima
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø (Norway)
| | - Yuanyuan Fang
- Department of Chemistry, University of Houston, Houston, TX 77204-5003 (USA)
| | - Yang Song
- Department of Chemistry, University of Houston, Houston, TX 77204-5003 (USA)
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229 (USA)
| | - Christine M Beavers
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8229 (USA)
| | - Karl M Kadish
- Department of Chemistry, University of Houston, Houston, TX 77204-5003 (USA).
| | - Abhik Ghosh
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø (Norway).
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42
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Trickett CA, Gagnon KJ, Lee S, Gándara F, Bürgi HB, Yaghi OM. Definitive Molecular Level Characterization of Defects in UiO-66 Crystals. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505461] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Trickett CA, Gagnon KJ, Lee S, Gándara F, Bürgi HB, Yaghi OM. Definitive Molecular Level Characterization of Defects in UiO-66 Crystals. Angew Chem Int Ed Engl 2015; 54:11162-7. [DOI: 10.1002/anie.201505461] [Citation(s) in RCA: 296] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Indexed: 11/07/2022]
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44
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Tong L, Kopecky A, Zong R, Gagnon KJ, Ahlquist MSG, Thummel RP. Light-Driven Proton Reduction in Aqueous Medium Catalyzed by a Family of Cobalt Complexes with Tetradentate Polypyridine-Type Ligands. Inorg Chem 2015. [DOI: 10.1021/acs.inorgchem.5b00915] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lianpeng Tong
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Andrew Kopecky
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Ruifa Zong
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
| | - Kevin J. Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, California 94720, United States
| | - Mårten S. G. Ahlquist
- Division of Theoretical Chemistry & Biology, School of Biotechnology, KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - Randolph P. Thummel
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204-5003, United States
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45
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Abstract
Platinum has been inserted into corroles for the first time and three oxidized Pt(IV)(corrole˙(2-))ArAr' complexes have been structurally characterized. The Soret maxima of these complexes exhibit an unusually strong dependence on the meso-aryl substituents on the corrole, indicating aryl → corrole˙(2-) charge transfer character in these transitions.
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Affiliation(s)
- Abraham B Alemayehu
- Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway, 9037 Tromsø, Norway.
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46
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Abstract
Herein, we report the X-ray crystallographic structure of a 38-metal atom Au-Ag alloy nanomolecule. The structure of monometallic Au38(SR)24 consists of 2 central Au atoms and 21 Au atoms forming a bi-icosahedral core protected by 6 dimeric and 3 monomeric units. In Au38-xAgx(SR)24,where x ranges from 1 to 5, the silver atoms are selectively incorporated into the Au21 bi-icosahedral core. Within the Au21 core, the silver atoms preferentially occupy nine selected locations: (a) the two vertex edges, three atoms on each edge and six atoms total, and (b) the middle face-shared three-atom ring, adding to a total of nine locations. X-ray crystallography yielded a composition of Au34.04Ag3.96(SCH2CH2Ph)24. The crystal structure of the alloy nanomolecule can be described in terms of shells as Au2@Au17.04Ag3.96@ 6×[-SR-Au-SR-Au-SR] 3×[-SR-Au-SR-].
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Affiliation(s)
- Chanaka Kumara
- †Department of Chemistry and Biochemistry, University of Mississippi, 322 Coulter Hall, Oxford, Mississippi 38677, United States
| | - Kevin J Gagnon
- ‡Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Amala Dass
- †Department of Chemistry and Biochemistry, University of Mississippi, 322 Coulter Hall, Oxford, Mississippi 38677, United States
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47
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Giannopoulos DP, Wilson-Konderka C, Gagnon KJ, Teat SJ, Escuer A, Metallinos C, Stamatatos TC. Synthesis and first use of pyridine-2,6-diylbis(pyrazine-2-ylmethanone) in metal cluster chemistry: a {MnIII3Na2} complex with an ideal trigonal bipyramidal geometry. Dalton Trans 2015; 44:4318-27. [DOI: 10.1039/c4dt03666b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new {Mn3Na2} compound with trigonal bipyramidal topology was obtained from a metal-assisted transformation of the ligand (pz)CO(py)CO(pz).
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Affiliation(s)
| | | | - Kevin J. Gagnon
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Simon J. Teat
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Albert Escuer
- Departament de Quimica Inorganica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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48
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Whitehead GFS, Teat SJ, Gagnon KJ, Timco GA, Winpenny REP. An extended framework of cages formed of pre-synthesised and functionalised heterometallic cages. Chem Commun (Camb) 2015; 51:3533-6. [DOI: 10.1039/c4cc10035b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal–organic framework is reported which is formed from reacting a heterometallic ring, which is functionalised to act as a 4,4′-bipyridyl linear linker, and an oxo-centred metal-triangle.
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Affiliation(s)
| | - Simon J. Teat
- Advanced Light Source
- Lawrence Berkeley Laboratory
- Berkeley
- USA
| | - Kevin J. Gagnon
- Advanced Light Source
- Lawrence Berkeley Laboratory
- Berkeley
- USA
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Alemayehu AB, Gagnon KJ, Terner J, Ghosh A. Back Cover: Oxidative Metalation as a Route to Size-Mismatched Macrocyclic Complexes: Osmium Corroles (Angew. Chem. Int. Ed. 52/2014). Angew Chem Int Ed Engl 2014. [DOI: 10.1002/anie.201411397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Alemayehu AB, Gagnon KJ, Terner J, Ghosh A. Rücktitelbild: Oxidative Metalation as a Route to Size-Mismatched Macrocyclic Complexes: Osmium Corroles (Angew. Chem. 52/2014). Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201411397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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