1
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Atiga S, Saunders GC, Henderson W. Selenosalicylate; a little-studied heavy-element analogue of the versatile thiosalicylate ligand. RSC Adv 2024; 14:12323-12336. [PMID: 38633482 PMCID: PMC11019910 DOI: 10.1039/d4ra00926f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024] Open
Abstract
Selenosalicylic acid (ortho-HSeC6H4CO2H), the heavy element congener of the widely studied thiosalicylic acid, was prepared by reaction of 2-carboxybenzenediazonium chloride (HO2CC6H4N2+Cl-) with Na2Se2, followed by reduction of the resulting diselenide (SeC6H4CO2H)2 with zinc and acetic acid. The coordination chemistry of the selenosalicylate ligand towards a variety of platinum(ii), palladium(ii), nickel(ii), gold(iii), gold(i), rhodium(iii), iridium(iii) and ruthenium(ii) centres was explored. X-ray crystal structure determinations were carried out on the complexes [Pt(SeC6H4CO2)(PPh3)2], [{(p-cym)Ru(SeC6H4CO2)}2] (p-cym = η6-p-cymene, CH3C6H4CH(CH3)2), [{Cp*Rh(SeC6H4CO2)}2] (Cp* = η5-C5Me5) and [Cp*Ir(SeC6H4CO2)(PPh3)], and comparisons are made with corresponding thiosalicylate complexes. The complexes were characterised by NMR spectroscopy as well as ESI mass spectrometry, which indicated a greater propensity for fragmentation including by selenium loss, compared to the thiosalicylate analogues. Hirshfeld surface analysis to visualise and quantify intermolecular interactions revealed the dominance of H⋯H contacts in [{(p-cym)Ru(SeC6H4CO2)}2] and [Cp*Ir(SeC6H4CO2)(PPh3)].
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Affiliation(s)
- Simeon Atiga
- Chemistry, School of Science, University of Waikato Private Bag 3105 Hamilton 3240 New Zealand
- Department of Chemistry, Faculty of Natural Sciences, Kogi State University PMB 1008, Anyigba Kogi State Nigeria
| | - Graham C Saunders
- Chemistry, School of Science, University of Waikato Private Bag 3105 Hamilton 3240 New Zealand
| | - William Henderson
- Chemistry, School of Science, University of Waikato Private Bag 3105 Hamilton 3240 New Zealand
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2
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Yen WJ, Liao JH, Chiu TH, Chen JY, Chen YJ, Kahlal S, Saillard JY, Liu CW. Doping effect on a two-electron silver nanocluster. NANOSCALE 2024; 16:7011-7018. [PMID: 38511284 DOI: 10.1039/d4nr00326h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
This study investigates the effects of metal addition and doping of a 2-electron silver superatom, [Ag10{S2P(OiPr)2}8] (Ag10). When Ag+ is added to Ag10 in THF solution, [Ag11{S2P(OiPr)2}8(OTf)] (Ag11) is rapidly formed almost quantitatively. When the same method is used with Cu+, a mixture of alloys, [CuxAg11-x{S2P(OiPr)2}8]+ (x = 1-3, CuxAg11-x), is obtained. In contrast, introducing Au+ to Ag10 leads to decomposition. The structural and compositional analysis of Ag11 was characterized by single-crystal X-ray diffraction (SCXRD), ESI-MS, NMR spectroscopy, and DFT calculations. While no crystal structure was obtained for CuxAg11-x, DFT calculations provide insights into potential sites for copper location. The absorption spectrum exhibits a notable blue shift in the low-energy band after copper doping, contrasting with that of the slight shift observed in 8-electron Cu-doped Ag nanoclusters. Ag11 and CuxAg11-x are strongly emissive at room temperature, and solvatochromism across different organic solvents is highlighted. This study underscores the profound influence of metal addition and doping on the structural and optical properties of silver nanoclusters, providing important contributions to understanding the nanoclusters and their photophysical behaviors.
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Affiliation(s)
- Wei-Jung Yen
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan, Republic of China.
| | - Jian-Hong Liao
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan, Republic of China.
| | - Tzu-Hao Chiu
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan, Republic of China.
| | - Jie-Ying Chen
- Department of Chemistry, Fu-Jen Catholic University, New Taipei City 24205, Taiwan, Republic of China
| | - Yuan Jang Chen
- Department of Chemistry, Fu-Jen Catholic University, New Taipei City 24205, Taiwan, Republic of China
| | - Samia Kahlal
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France.
| | | | - C W Liu
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan, Republic of China.
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3
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Gillespie AA, Roemer M, Jago D, Sobolev AN, Nealon GL, Spackman PR, Moggach SA, Koutsantonis GA. Functionalised organometallic photoswitches containing dihydropyrene units. Dalton Trans 2023; 52:14549-14563. [PMID: 37781908 DOI: 10.1039/d3dt02505e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Functionalising organic molecular photoswitches with metal complexes has been shown to alter and enhance their switching states. These organometallic photoswitches provide a promising basis for novel smart molecular materials and molecular electronic devices. We have detailed the synthesis and characterisation of mono- and bimetallic half-sandwich ruthenium and iron complexes functionalised with alkynyl dihydropyrenes (DHP). Their electronic and photophysical properties were determined by the use of chemical, electrochemical and spectroelectrochemical techniques. The introduction of the metal alkynyl moiety allows access to additional redox and protonation states not accessible by the DHP alone. An additional metal alkynyl moiety inhibits observable photochromic switching. Analysis of the NIR and IR bands in the mixed valence complexes suggests there is a high degree of charge delocalisation across the DHP.
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Affiliation(s)
- Angus A Gillespie
- Chemistry, School of Molecular Science, The University of Western Australia, Crawley, WA 6009, Australia.
| | - Max Roemer
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - David Jago
- Chemistry, School of Molecular Science, The University of Western Australia, Crawley, WA 6009, Australia.
| | - Alexandre N Sobolev
- Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Crawley, WA 6009, Australia
| | - Gareth L Nealon
- Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Crawley, WA 6009, Australia
| | - Peter R Spackman
- Curtin Institute for Computation, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Stephen A Moggach
- Chemistry, School of Molecular Science, The University of Western Australia, Crawley, WA 6009, Australia.
| | - George A Koutsantonis
- Chemistry, School of Molecular Science, The University of Western Australia, Crawley, WA 6009, Australia.
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Tabrizi L, Yang WS, Chintha C, Morrison L, Samali A, Ramos JW, Erxleben A. Gold(I) Complexes with a Quinazoline Carboxamide Alkynyl Ligand: Synthesis, Cytotoxicity, and Mechanistic Studies. Eur J Inorg Chem 2021; 2021:1921-1928. [PMID: 34248416 PMCID: PMC8252463 DOI: 10.1002/ejic.202100120] [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: 02/11/2021] [Revised: 04/20/2021] [Indexed: 12/22/2022]
Abstract
A series of gold(I) complexes with the general formula [Au(L2)(L')] (L2=4-phenyl-N-(prop-2-yn-1-yl)quinazoline-2-carboxamide, L'=PPh3 (triphenylphosphine), 1; TPA (1,3,5-triaza-7-phosphaadamantane), 2, and Me2-imy (1,3-dimethylimidazol-2-ylidene), 3) were synthesized and fully characterized by spectroscopic methods. The alkynyl ligand L2 belongs to the quinazoline carboxamide class of ligands that are known to bind to the translocator protein (TSPO) at the outer mitochondrial membrane. 1 and 2 exert cytotoxic effects in bladder cancer cells with IC50 values in the low micromolar range. Further mechanistic analysis indicated that the two complexes both act by inducing reactive oxygen species and caspase-mediated apoptosis. The complexes inhibit thioredoxin reductase, an established target of anticancer gold(I) complexes. Docking studies confirmed that after ligand exchange the free ligand L2 can interact with the TSPO binding site.
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Affiliation(s)
- Leila Tabrizi
- School of ChemistryNational University of Ireland GalwayGalwayIreland
| | - Won Seok Yang
- University of Hawaii Cancer CenterUniversity of Hawaii at ManoaHonoluluUSA
| | - Chetan Chintha
- Apoptosis Research CentreSchool of Natural SciencesNational University of Ireland GalwayGalwayIreland
| | - Liam Morrison
- Earth and Ocean SciencesSchool of Natural Sciences and Ryan InstituteNational University of Ireland GalwayGalwayIreland
| | - Afshin Samali
- Apoptosis Research CentreSchool of Natural SciencesNational University of Ireland GalwayGalwayIreland
| | - Joe W. Ramos
- University of Hawaii Cancer CenterUniversity of Hawaii at ManoaHonoluluUSA
| | - Andrea Erxleben
- School of ChemistryNational University of Ireland GalwayGalwayIreland
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Galassi R, Luciani L, Gambini V, Vincenzetti S, Lupidi G, Amici A, Marchini C, Wang J, Pucciarelli S. Multi-Targeted Anticancer Activity of Imidazolate Phosphane Gold(I) Compounds by Inhibition of DHFR and TrxR in Breast Cancer Cells. Front Chem 2021; 8:602845. [PMID: 33490036 PMCID: PMC7821381 DOI: 10.3389/fchem.2020.602845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/09/2020] [Indexed: 12/09/2022] Open
Abstract
A class of phosphane gold(I) compounds, made of azoles and phosphane ligands, was evaluated for a screening on the regards of Breast Cancer cell panels (BC). The compounds possess N-Au-P or Cl-Au-P bonds around the central metal, and they differ for the presence of aprotic or protic polar groups in the azoles and/or the phosphane moieties to tune their hydrophilicity. Among the six candidates, only the compounds having the P-Au-N environment and not displaying neither the hydroxyl nor carboxyl groups in the ligands were found active. The compounds were screened by MTT tests in SKBR3, A17, and MDA-MB231 cancer cells, and two compounds (namely the 4,5-dicyano-imidazolate-1yl-gold(I)-(triphenylphosphane, 5, and 4,5-dichloro-imidazolate-1yl-gold(I)-triphenylphosphane, 6) were found very cytotoxic, with the most active with an IC50 value of 3.46 μM in MDA-MB231 cells. By performing enzymatic assays in the treated cells lysates, the residual enzymatic activity of dihydrofolate reductase (DHFR) has been measured after cell treatment for 4 or 12 h in comparison with control cells. Upon 12 h of treatment, the activity of DHFR was significantly reduced in both SKBR3 and A17 cells by compounds 5 and 6, but not in human MDA-MB231 cells; interestingly, it was found remarkably high after 4 h of treatment, revealing a time dependence for the DHFR enzymatic assays. The DHFR inhibition data have been compared to those for the thioredoxin reductase (TrxR), the most recognized molecular target for gold compounds. For this latter, similar residual activities (i.e., 37 and 49% for the match of SKBR3 cells and compound 5 or 6, respectively) were found. Binding studies on the regards of ct-DNA (calf-thymus-DNA) and of plasma transporters proteins, such as BSA (bovine serum albumin) and ATF (apo transferrin), were performed. As expected for gold compounds, the data support strong binding to proteins (Ksv values range: 1.51 ÷ 2.46 × 104 M−1) and a weaker interaction with ct-DNA's minor groove (Ksv values range: 1.55 ÷ 6.12 × 103 M−1).
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Affiliation(s)
- Rossana Galassi
- School of Science and Technology, University of Camerino, Camerino, Italy
| | - Lorenzo Luciani
- School of Science and Technology, University of Camerino, Camerino, Italy
| | - Valentina Gambini
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Silvia Vincenzetti
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Giulio Lupidi
- School of Drugs and Health Products Sciences, University of Camerino, Camerino, Italy
| | - Augusto Amici
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Cristina Marchini
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Junbiao Wang
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Stefania Pucciarelli
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
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Yadav S, Ray S, Singh A, Mobin SM, Roy TK, Dash C. Dinuclear gold(I)‐N‐heterocyclic carbene complexes: Synthesis, characterization, and catalytic application for hydrohydrazidation of terminal alkynes. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Seema Yadav
- Department of Chemistry, School of Chemical Sciences and Pharmacy Central University of Rajasthan Bandar Sindri, Ajmer Rajasthan 305817 India
| | - Sriparna Ray
- Department of Chemistry, School of Basic Sciences Manipal University Jaipur Jaipur Rajasthan 303007 India
| | - Ajeet Singh
- Department of Chemistry Indian Institute of Technology (IIT) Indore Simrol, Khandwa Road Indore 453552 India
| | - Shaikh M. Mobin
- Department of Chemistry Indian Institute of Technology (IIT) Indore Simrol, Khandwa Road Indore 453552 India
| | - Tapta Kanchan Roy
- Department of Chemistry and Chemical Sciences Central University of Jammu Jammu 180001 India
| | - Chandrakanta Dash
- Department of Chemistry, School of Chemical Sciences and Pharmacy Central University of Rajasthan Bandar Sindri, Ajmer Rajasthan 305817 India
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7
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Tabrizi L, Romanova J. Antiproliferative Activity of Gold(I) N‐Heterocyclic Carbene and Triphenylphosphine Complexes with Ibuprofen Derivatives as Effective Enzyme Inhibitors. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5618] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Leila Tabrizi
- School of ChemistryNational University of Ireland Galway, University Road Galway H91 TK33 Ireland
| | - Julia Romanova
- Faculty of Chemistry and Pharmacy, Department of Inorganic ChemistryUniversity of Sofia “St. Kliment Ohridski” 1 James Bourchier Blvd. Sofia 1164 Bulgaria
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8
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Luong LMC, Malwitz MA, Moshayedi V, Olmstead MM, Balch AL. Role of Anions and Mixtures of Anions on the Thermochromism, Vapochromism, and Polymorph Formation of Luminescent Crystals of a Single Cation, [(C6H11NC)2Au]+. J Am Chem Soc 2020; 142:5689-5701. [DOI: 10.1021/jacs.9b13168] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Lucy M. C. Luong
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Mark A. Malwitz
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Venoos Moshayedi
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Marilyn M. Olmstead
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Alan L. Balch
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
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9
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Gutiérrez-Blanco A, Fernández-Moreira V, Gimeno MC, Peris E, Poyatos M. Tetra-Au(I) Complexes Bearing a Pyrene Tetraalkynyl Connector Behave as Fluorescence Torches. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00217] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Gutiérrez-Blanco
- Institute of Advanced Materials (INAM). Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| | - Vanesa Fernández-Moreira
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM). Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM). Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
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10
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Synthesis, characterization and anticancer evaluation of phosphinogold(I) thiocarbohydrate complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Vincent KB, Gluyas JBG, Zeng Q, Yufit DS, Howard JAK, Hartl F, Low PJ. Sandwich and half-sandwich metal complexes derived from cross-conjugated 3-methylene-penta-1,4-diynes. Dalton Trans 2017; 46:5522-5531. [DOI: 10.1039/c6dt04470k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mono-, di- and trimetallic derivatives of the cross-conjugated 3-methylene-penta-1,4-diyne moiety have been prepared, and studied by (spectro)electrochemical methods.
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Affiliation(s)
| | - Josef B. G. Gluyas
- School of Chemistry and Biochemistry
- University of Western Australia
- Crawley 6009
- Australia
| | - Qiang Zeng
- Department of Chemistry
- University of Reading
- Reading
- UK
- School of Chemistry and Chemical Engineering
| | | | | | | | - Paul J. Low
- Department of Chemistry
- Durham University
- Durham
- UK
- School of Chemistry and Biochemistry
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12
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Mirzadeh N, Privér SH, Abraham A, Shukla R, Bansal V, Bhargava SK. Linking Flavonoids to Gold - A New Family of Gold Compounds for Potential Therapeutic Applications. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500514] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Mirzadeh N, Bennett M, Wächtler E, Zhechkov L, Heine T, Bhargava S. Formation of heterobinuclear Pt–Au complexes by chelate ring-opening of cis-[Pt(κ2-C6R4PPh2)2] (R = H, F). J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Shawkataly OB, Goh CP, Tariq A, Khan IA, Fun HK, Rosli MM. Synthesis, spectral characterization and crystals structure of some arsane derivatives of gold (I) complexes: a comparative density functional theory study. PLoS One 2015; 10:e0119620. [PMID: 25798915 PMCID: PMC4370652 DOI: 10.1371/journal.pone.0119620] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 11/30/2014] [Indexed: 11/28/2022] Open
Abstract
A series of complexes of the type LAuCl where L = tris(p-tolylarsane), tris(m-tolylarsane), bis(diphenylarsano)ethane, and tris(naphthyl)arsane have been synthesized. All of the new complexes, 1-4, have been fully characterized by means of 1H NMR and 13C NMR spectroscopy and single crystal X-ray crystallography. The structures of complexes 1-4 have been determined from X-ray diffraction data. The linear molecules have an average bond distance between gold-arsenic and gold-chlorine of 2.3390Å and 2.2846Å, respectively. Aurophilic interaction was prominent in complex 1 and 3, whereas complex 2 and 4 do not show any such interaction. The intermolecular gold interaction bond length was affected by the electronegativity of the molecule. The computed values calculated at DFT level using B3LYP function are in good agreement with the experimental results.
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Affiliation(s)
- Omar bin Shawkataly
- Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800, Penang, Malaysia
- * E-mail:
| | - Chin-Ping Goh
- Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Abu Tariq
- Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Imthyaz Ahmad Khan
- Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Hoong-Kun Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800, Penang, Malaysia
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia
| | - Mohd Mustaqim Rosli
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800, Penang, Malaysia
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15
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Hung LL, Lam WH, Wong KMC, Cheng ECC, Zhu N, Yam VWW. Synthesis, luminescence and electrochemical properties of luminescent dinuclear mixed-valence gold complexes with alkynyl bridges. Inorg Chem Front 2015. [DOI: 10.1039/c5qi00017c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A series of luminescent dinuclear mixed-valence gold alkynyl complexes was synthesized. Their photophysical properties can be tuned by varying the nature of the alkynyl bridges, as supported by computational studies.
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Affiliation(s)
- Ling-Ling Hung
- Department of Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
| | - Wai Han Lam
- Department of Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
| | | | | | - Nianyong Zhu
- Department of Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
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Lo HS, Zhu N, Au VKM, Yam VWW. Synthesis, characterization, photophysics and electrochemistry of polynuclear copper(I) and gold(I) alkynyl phosphine complexes. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Vančo J, Gáliková J, Hošek J, Dvořák Z, Paráková L, Trávníček Z. Gold(I) complexes of 9-deazahypoxanthine as selective antitumor and anti-inflammatory agents. PLoS One 2014; 9:e109901. [PMID: 25333949 PMCID: PMC4198181 DOI: 10.1371/journal.pone.0109901] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 09/10/2014] [Indexed: 01/06/2023] Open
Abstract
The gold(I) mixed-ligand complexes involving O-substituted derivatives of 9-deazahypoxanthine (HLn) and triphenylphosphine (PPh3) with the general formula [Au(Ln)(PPh3)] (1–5) were prepared and thoroughly characterized by elemental analysis, FT-IR and multinuclear NMR spectroscopy, ESI+ mass spectrometry, single crystal X-ray (HL5 and complex 2) and TG/DTA analyses. Complexes 1–5 were evaluated for their in vitro antitumor activity against nine human cancer lines, i.e. MCF7 (breast carcinoma), HOS (osteosarcoma), A549 (adenocarcinoma), G361 (melanoma), HeLa (cervical cancer), A2780 (ovarian carcinoma), A2780R (ovarian carcinoma resistant to cisplatin), 22Rv1 (prostate cancer) and THP-1 (monocytic leukaemia), for their in vitro anti-inflammatory activity using a model of LPS-activated macrophages, and for their in vivo antiedematous activity by λ-carrageenan-induced hind paw edema model on rats. The results showed that the complexes 1–5 exhibit selective in vitro cytotoxicity against MCF7, HOS, 22Rv1, A2780 and A2780R, with submicromolar IC50 values for 2 against the MCF7 (0.6 µM) and HOS (0.9 µM). The results of in vitro cytotoxicity screening on primary culture of human hepatocytes (HEP220) revealed up to 30-times lower toxicity of compounds against healthy cells as compared with cancer cells. Additionally, the complexes 1–5 significantly influence the secretion and expression of pro-inflammatory cytokines TNF-α and IL-1β by a similar manner as a commercially used anti-arthritic drug Auranofin. The tested complexes also significantly influence the rate and overall volume of the edema, caused by the intraplantar application of λ-carrageenan polysaccharide to rats. Based on these promising results, the presented compounds could qualify to become feasible candidates for advanced testing as potential antitumor and anti-inflammatory drug-like compounds.
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Affiliation(s)
- Ján Vančo
- Regional Centre of Advanced Technologies and Materials & Department of Inorganic Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Jana Gáliková
- Regional Centre of Advanced Technologies and Materials & Department of Inorganic Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Jan Hošek
- Regional Centre of Advanced Technologies and Materials & Department of Inorganic Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Zdeněk Dvořák
- Regional Centre of Advanced Technologies and Materials & Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Lenka Paráková
- Department of Human Pharmacology and Toxicology, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Zdeněk Trávníček
- Regional Centre of Advanced Technologies and Materials & Department of Inorganic Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
- * E-mail:
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Gold(I)-triphenylphosphine complexes with hypoxanthine-derived ligands: in vitro evaluations of anticancer and anti-inflammatory activities. PLoS One 2014; 9:e107373. [PMID: 25226034 PMCID: PMC4167326 DOI: 10.1371/journal.pone.0107373] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/11/2014] [Indexed: 01/19/2023] Open
Abstract
A series of gold(I) complexes involving triphenylphosphine (PPh3) and one N-donor ligand derived from deprotonated mono- or disubstituted hypoxanthine (HLn) of the general composition [Au(Ln)(PPh3)] (1–9) is reported. The complexes were thoroughly characterized, including multinuclear high resolution NMR spectroscopy as well as single crystal X-ray analysis (for complexes 1 and 3). The complexes were screened for their invitro cytotoxicity against human cancer cell lines MCF7 (breast carcinoma), HOS (osteosarcoma) and THP-1 (monocytic leukaemia), which identified the complexes 4–6 as the most promising representatives, who antiproliferative activity was further tested against A549 (lung adenocarcinoma), G-361 (melanoma), HeLa (cervical cancer), A2780 (ovarian carcinoma), A2780R (ovarian carcinoma resistant to cisplatin), 22Rv1 (prostate cancer) cell lines. Complexes 4–6 showed a significantly higher invitro anticancer effect against the employed cancer cells, except for G-361, as compared with the commercially used anticancer drug cisplatin, with IC50 ≈ 1–30 µM. Anti-inflammatory activity was evaluated invitro by the assessment of the ability of the complexes to modulate secretion of the pro-inflammatory cytokines, i.e. tumour necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), in the lipopolysaccharide-activated macrophage-like THP-1 cell model. The results of this study identified the complexes as auspicious anti-inflammatory agents with similar or better activity as compared with the clinically applied gold-based antiarthritic drug Auranofin. In an effort to explore the possible mechanisms responsible for the biological effect, the products of interactions of selected complexes with sulfur-containing biomolecules (L-cysteine and reduced glutathione) were studied by means of the mass-spectrometry study.
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Schwade VD, Kirsten L, Hagenbach A, Schulz Lang E, Abram U. Indium(III), lead(II), gold(I) and copper(II) complexes with isophthaloylbis(thiourea) ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.03.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Barlow A, Babgi B, Samoc M, Corkery TC, van Cleuvenbergen S, Asselberghs I, Clays K, Cifuentes MP, Humphrey MG. Organometallic Complexes for Non-Linear Optics. 51. Second- and Third-Order Non-Linear Optical Properties of Alkynylgold Complexes. Aust J Chem 2012. [DOI: 10.1071/ch12054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The alkynes HC≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2 (4) and HC≡CC6H4-4-C≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2 (6) and gold alkynyl complexes Au{C≡CC6H2-2,5-(OEt)2-4-C≡CC6H4-4-NO2}(PPh3) (7), Au(C≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2)(PPh3) (8), and Au(C≡CC6H4-4-C≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2)(PPh3) (9) have been synthesized. The linear optical properties and quadratic optical non-linearities of 7–9 have been measured, the latter by hyper-Rayleigh scattering at 1064 nm, and compared with data for the previously reported complexes Au(C≡CC6H4-4-NO2)(PPh3) (10) and Au(C≡CC6H4-4-C≡CC6H4-4-NO2)(PPh3) (11). The optical absorption maximum red-shifts and the first hyperpolarizabilities increase on π-system lengthening and on introduction of electron-releasing substituents on the π-bridge ring adjacent to the metal centre. The cubic non-linear optical properties of 1,4-{(PCy3)Au(C≡C)}2C6H4 (12) and {(PCy3)Au(C≡C-4-C6H4C≡C)}6C6 (13) have been assessed by wide spectroscopic range femtosecond Z-scan studies; the maximal values of the imaginary component and the effective two-photon absorption cross-section increase markedly on proceeding from linear complex 12 to 6-fold-symmetric complex 13, an increase that is maintained when data are scaled by relative molecular weight.
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Popescu A, Laromaine A, Teixidor F, Sillanpää R, Kivekäs R, Llambias JI, Viñas C. Uncommon Coordination Behaviour of P(S) and P(Se) Units when Bonded to Carboranyl Clusters: Experimental and Computational Studies on the Oxidation of Carboranyl Phosphine Ligands. Chemistry 2011; 17:4429-43. [DOI: 10.1002/chem.201003330] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Indexed: 11/08/2022]
Affiliation(s)
- Adrian‐Radu Popescu
- Institut de Ciència de Materials de Barcelona (CSIC), Campus U.A.B. 08193 Bellaterra (Spain), Fax: (+34) 93‐580‐57‐29
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona (CSIC), Campus U.A.B. 08193 Bellaterra (Spain), Fax: (+34) 93‐580‐57‐29
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (CSIC), Campus U.A.B. 08193 Bellaterra (Spain), Fax: (+34) 93‐580‐57‐29
| | - Reijo Sillanpää
- Department of Chemistry, University of Jyväskylä, 40014, Jyväskylä (Finland)
| | - Raikko Kivekäs
- Department of Chemistry, P.O. Box 55, University of Helsinki, 00014 (Finland)
| | - Joan Ignasi Llambias
- Institut de Ciència de Materials de Barcelona (CSIC), Campus U.A.B. 08193 Bellaterra (Spain), Fax: (+34) 93‐580‐57‐29
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (CSIC), Campus U.A.B. 08193 Bellaterra (Spain), Fax: (+34) 93‐580‐57‐29
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Coetzee J, Cronje S, Dobrzańska L, Raubenheimer HG, Jooné G, Nell MJ, Hoppe HC. Novel N-heterocyclic ylideneamine gold(i) complexes: synthesis, characterisation and screening for antitumour and antimalarial activity. Dalton Trans 2011; 40:1471-83. [DOI: 10.1039/c0dt01312a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Crespo O, Concepción Gimeno M, Jones PG, Laguna A, Naranjo M, Villacampa MD. Coordination Behaviour of Gold and Silver Towards Pyrazole Ligands. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800578] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Organometallic complexes for nonlinear optics. 41: Syntheses and quadratic NLO properties of 4-{4-(4-nitrophenyl)diazophenyl}ethynylphenylethynyl complexes. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2007.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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José Calhorda M, Costa PJ, Martinho PN, Concepción Gimeno M, Laguna A, Quintal S, Dolores Villacampa M. Synthesis and ligand properties towards gold and silver of the ferrocenylamidobenzimidazole ligand. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.06.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Polymetallation of alkenes: Formation of some complexes containing branched chain carbon-rich ligands. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.06.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Synthesis of novel gold(I) complexes derived by AgCl-elimination between [AuCl(PPh3)] and silver(I) heterocyclic carboxylates, and their antimicrobial activities. Molecular structure of [Au(R,S-Hpyrrld)(PPh3)] (H2pyrrld=2-pyrrolidone-5-carboxylic acid). INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.01.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Barranco E, Crespo O, Gimeno M, Jones P, Laguna A. The Role of Secondary Interactions in Group 11 Metal Complexes Containing the Ferrocene Ligand FcCH2NHpyMe in Supramolecular Structures. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400479] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Synthesis, characterization, electrochemistry and luminescence studies of heterometallic gold(I)–rhenium(I) alkynyl complexes. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.07.024] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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The auration of 2-hydroxy-pyridine (2-pyridone): preparative and structural studies and a comparison with reactions of related aliphatic O,N-donors. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.11.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Yam VWW, Cheung KL, Yip SK, Cheung KK. Synthesis, characterization, structure and luminescence studies of mono-, di- and trinuclear gold(I) phosphine alkynyl complexes. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00606-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nomiya K, Yamamoto S, Noguchi R, Yokoyama H, Kasuga NC, Ohyama K, Kato C. Ligand-exchangeability of 2-coordinate phosphinegold(I) complexes with AuSP and AuNP cores showing selective antimicrobial activities against Gram-positive bacteria. Crystal structures of [Au(2-Hmpa)(PPh(3))] and [Au(6-Hmna)(PPh(3))] (2-H(2)mpa=2-mercaptopropionic acid, 6-H(2)mna=6-mercaptonicotinic acid). J Inorg Biochem 2003; 95:208-20. [PMID: 12763666 DOI: 10.1016/s0162-0134(03)00125-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Selective and effective antimicrobial activities against Gram-positive bacteria (B. subtilis and/or S. aureus) were found in 2-coordinate gold(I)-PPh(3) complexes with AuSP and AuNP cores, i.e. [Au(L)(PPh(3))] (HL=2-H(2)mna [H(2)mna=mercaptonicotinic acid] 3, D-H(2)pen [H(2)pen=penicillamine] 4, D,L-H(2)pen 5, 4-H(2)mba [H(2)mba=mercaptobenzoic acid] 8, Hpz [Hpz=pyrazole] 9, Him [Him=imidazole] 10, 1,2,3-Htriz [Htriz=triazole] 11, 1,2,4-Htriz 12, Htetz [Htetz=tetrazole] 13), whereas no activity was observed in 2-coordinate AuSP core complexes [Au(2-Hmba)(PPh(3))] 6 and [Au(3-Hmba)(PPh(3))] 7. The two novel AuSP core complexes, [Au(2-Hmpa)(PPh(3))] [H(2)mpa=mercaptopropionic acid] 1 and [Au(6-Hmna)(PPh(3))] 2, were prepared and characterized by elemental analysis, FT-IR, TG/DTA, and ((31)P, 1H and 13C) NMR spectroscopy. The crystal structures of 1 and 2 were determined as a supramolecular arrangement of the 2-coordinate AuSP core. Both 1 and 2 significantly showed antibacterial activities. As a model reaction of phosphinegold (I) complexes with the cysteine residue in the biological ligands, we examined if the ligand exchange reactions of the aromatic anions L(1)(-) in [Au(L(1))(PPh(3))] (HL(1)=6-H(2)mna 2, 2-H(2)mna 3, 2-H(2)mba 6, Hpz 9, Him 10, 1,2,3-Htriz 11, 1,2,4-Htriz 12) with aliphatic thiols HL(2) (HL(2)=2-H(2)mpa, D-H(2)pen) occurred under the mild conditions and, also, if the 'reverse' reactions, namely, the ligand exchange reactions of the thiolate anions in [Au(2-Hmpa)(PPh(3))] 1, [Au(D-Hpen)(PPh(3))] 4 and [Au(2-Hmba)(PPh(3))] 6 with the free ligands HL(1) took place under similar conditions. In this work, a relationship of the ligand-exchangeability among 2-coordinate gold(I) complexes (1-4, 6, 9-12) was revealed. Complex 6 was substitution-inert, whereas complexes 1-4 and 9-12 were substitution-labile. The ligand-exchangeability of Au-S and Au-N bonds in the 2-coordinate phosphinegold(I) complexes with AuSP and AuNP cores to form new AuSP cores, with retention of the Au-P bond, was closely related to the observed activities against Gram-positive bacteria, and the ease of the ligand-exchange reaction was strongly related to the intensity of the activities.
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Affiliation(s)
- Kenji Nomiya
- Department of Materials Science, Faculty of Science, Kanagawa University, Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan.
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Che CM, Xia BH, Huang JS, Chan CK, Zhou ZY, Cheung KK. Photoluminescent metal-sulfur clusters derived from tetrathiometalates: metal-to-metal charge-transfer excited states of d0-d10 heterobimetallic sulfido clusters with bulky phosphine ligands. Chemistry 2001; 7:3998-4006. [PMID: 11596942 DOI: 10.1002/1521-3765(20010917)7:18<3998::aid-chem3998>3.0.co;2-h] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Reactions of MS4(2-) (M = Mo, W) with M'(PCy3)X (M'=Ag/Au, X= ClO4/Cl) and [Cu2(dcpm)2(MeCN)2](ClO4)2 (dcpm = bis(dicyclohexylphosphino)methane) afforded heterometallic sulfido clusters [M'2(PCy3)2(MS4)] (M=Mo, M'=Au: 2; M=W, M'=Ag: 3, Au: 4) and [Cu4(dcpm)4(MS4)](ClO4)2 (M=Mo: 5 x (ClO4)2, W: 6 x (ClO4)2), all of which, except 4, have been characterized by X-ray structure determination. Clusters 5 x(ClO4)2 and 6 x (ClO4)2 feature unusual 16-membered [Cu4P5C4] metallamacrocycles formed on the respective tetrathiometalate anion templates and have unusually long Cu-S bonds and Cu...M distances for metal sulfur clusters that contain a saddle-shaped [Cu4MS4] core. Low-energy absorption bands are observed in their electronic spectra at approximately 562 and 467 nm, respectively, assignable to MMCT transitions; quasireversible reduction waves are observed with E(1/2) = -1.43 (52+) and -1.78 V (62+) versus FeCp2(0/+); and they are emissive either in the solid state or in solution. The emission of 6(2+) can be quenched by both electron acceptors, such as methylviologen, or electron donors, such as aromatic amines, with the excited state reduction potential E(62+*/6+) estimated to be approximately 1.13V versus a normal hydrogen electrode.
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Affiliation(s)
- C M Che
- Department of Chemistry, The University of Hong Kong.
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McDonagh AM, Lucas NT, Cifuentes MP, Humphrey MG, Houbrechts S, Persoons A. Organometallic complexes for nonlinear optics. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00311-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nomiya K, Noguchi R, Shigeta T, Kondoh Y, Tsuda K, Ohsawa K, Chikaraishi-Kasuga N, Oda M. Synthesis and Structural Characterization of Silver(I) and Gold(I) Complexes with 2-Mercaptonicotinic Acid (H2mna) and Triphenylphosphine Ligands, and Their Antimicrobial Activities. Crystal Structures of Monomeric, 3- and 4-Coordinate Silver(I) Complexes [Ag(Hmna)(PPh3)2] and [Ag(Hmna)(PPh3)3] in the Solid State. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2000. [DOI: 10.1246/bcsj.73.1143] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Nomiya K, Noguchi R, Oda M. Synthesis and crystal structure of coinage metal(I) complexes with tetrazole (Htetz) and triphenylphosphine ligands, and their antimicrobial activities. A helical polymer of silver(I) complex [Ag(tetz)(PPh3)2]n and a monomeric gold(I) complex [Au(tetz)(PPh3)]. Inorganica Chim Acta 2000. [DOI: 10.1016/s0020-1693(99)00401-6] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Syntheses of complexes containing substituted 4-ethynylquinolines or 1-azabuta-1,3-dienes by addition of imines to a cationic butatrienylidene-ruthenium complex. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00456-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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The first examples of η5-bonding of a carbaborylphosphine ligand to transition metals. Synthesis and characterisation of 7-{PPh2AuPPh3}-8-Ph-7,8-nido-C2B9H10, 1-{PPh2AuCl}-2-Ph-3-(p-cymene)-3,1,2-pseudocloso-RuC2B9H9 and 1-{PPh2AuCl}-2-Ph-3-(η-C5Me5)-3,1,2-pseudocloso-RhC2B9H9,. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)00651-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Transformation of polymeric silver(I) imidazolate to monomeric imidazolatotris(triphenylphosphine) silver(I) complex. Synthesis of [Ag(imd)(PPh3)3] (Himd=Imidazole) and its characterization in the solid-state and in solution. J Inorg Biochem 1998. [DOI: 10.1016/s0162-0134(97)10003-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Whittall IR, Humphrey MG, Houbrechts S, Maes J, Persoons A, Schmid S, Hockless DC. Organometallic complexes for nonlinear optics. 14. Syntheses and second-order nonlinear optical properties of ruthenium, nickel and gold σ-acetylides of 1,3,5-triethynylbenzene: X-ray crystal structures of 1-(HC≡C)-3,5-C6H3(trans-C≡CRuCl(dppm)2)2 and 1,3,5-C6H3(C≡CAu(PPh3))3. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(97)00320-3] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Whittall IR, Humphrey MG, Samoc M, Luther-Davies B, Hockless DC. Organometallic complexes for non-linear optics XII syntheses and second-order susceptibilities of (neomenthyldiphenylphosphine) gold σ-arylacetylides: X-ray crystal structures of Au(C≡CPh) (nmdpp) and Au((E)-4,4′-C≡CC6H4CH=CHC6H4NO2)(nmdpp). J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(97)00196-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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A novel method of introducing the Au2(PR3)2 (R = Ph, OMe) unit into metal clusters X-ray structures of three complexes containing Au2Ru3 cores and of Ru6C(μ-CO)2(CO)14 {Au(PPh3)}2. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(96)06195-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chan CK, Guo CX, Cheung KK, Li D, Che CM. A luminescent heterometallic AuI⋯ CuIcomplex. Spectroscopic properties and crystal structures of [Au(PPh3)(C7H5N2)] and [(Au(PPh3)(µ-C7H5N2)Cu-(µ-C7H5N2)}2](C7H5N2= 7-azaindolate). ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940003677] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Goodgame DM, O'Mahoney CA, Plank SD, Williams DJ. Formation of an unusual polymeric 24-membered macrocyclic complex of praseodymium(III): X-ray crystal structure of [Pr(Ph3PAuL)2(NO3)3]n (L = succinimide anion) and of its (Ph3P)AuL precursor. Polyhedron 1993. [DOI: 10.1016/s0277-5387(00)80121-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Reid BD, Welch AJ. The synthesis and characterization of σ-bonded gold carbaborane compounds: closo-Carbaboranes as good σ-donor ligands. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83420-m] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chemistry of hexaruthenium carbidocarbonyl cluster complexes. Syntheses and X-ray crystal structures of Ru6C(CO)15(μ-SePh)(μ-AuPPh3), Ru6C(CO)14(μ-SePh)2, and Ru6C(CO)14(μ-SePh)(μ,η3-C3H5). J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83227-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Peter M, Peringer P, Müller EP. Notes. Synthesis and nuclear magnetic resonance spectroscopy of the platinum–gold clusters [Pt(AuPPh3){P(CH2CH2PPh2)3}]+and [Pt(AuPPh3){N(CH2CH2PPh2)3}]+. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/dt9910002459] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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