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Zhivkova T, Culita DC, Abudalleh A, Dyakova L, Mocanu T, Madalan AM, Georgieva M, Miloshev G, Hanganu A, Marinescu G, Alexandrova R. Homo- and heterometallic complexes of Zn(II), {Zn(II)Au(I)}, and {Zn(II)Ag(I)} with pentadentate Schiff base ligands as promising anticancer agents. Dalton Trans 2023; 52:12282-12295. [PMID: 37574873 DOI: 10.1039/d3dt01749d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Two families of homo- and heterometallic complexes, [Zn2L1(μ-OH)(H2O)2](ClO4)2, [Zn2L2(μ-OH)(H2O)2](ClO4)2, [Zn2L3(μ-OH)(H2O)2](ClO4)2, 1∞[{L1Zn2(μ-OH)}{μ-[Ag(CN)2]}](ClO4), [{L1Zn2(μ-OH)}2{μ-[Au(CN)2]}{[Au(CN)2]2}](ClO4)·H2O, 1∞[{L2Zn2(μ3-OH)}2(H2O){μ-[Ag(CN)2]}](ClO4)3·THF·0.5MeOH, 1∞[{L2Zn2(μ3-OH)}2(H2O){μ-[Au(CN)2]}](ClO4)3·THF·H2O, and 1∞[{L3Zn2(μ-OH)}{μ-[Ag(CN)2]}][Ag(CN)2]·H2O, respectively, have been synthesized and characterized. The Schiff bases used as ligands were obtained by condensation reactions of 2,6-diformyl-p-cresol with N,N-dimethyl-ethylenediamine (HL1), 2-aminomethyl-pyridine (HL2), and 2-aminoethyl-pyridine (HL3), respectively. The cytotoxic/cytostatic and genotoxic effects in cultured human MCF-7 (luminal type A breast cancer), MDA-MB-231 (triple negative breast cancer), HeLa (cervical carcinoma), and Lep-3 (non-tumor embryonal fibroblastoid cells) were studied. The investigations were performed by thiazolyl blue tetrazolium bromide test (MTT test), neutral red uptake cytotoxicity assay, crystal violet staining, hematoxylin and eosin staining, double staining with acridine orange and propidium iodide, AnnexinV/FITC, and Comet assay in short-term experiments (24-72 h, with monolayer cell cultures) as well as by 3D colony-forming method in long-term experiments (28 days, with 3D cancer cell colonies). The results obtained revealed that: (i) applied at a concentration range of 0.1-100 μg mL-1, the compounds investigated decrease in a time- and concentration-dependent manner the viability and/or proliferation of the treated cells; (ii) complexes of {Zn(II)Au(I)} show relatively higher cytotoxic/genotoxic activity and antitumor potential as compared to {Zn(II)Ag(I)}; (iii) some of the complexes demonstrate more pronounced cytotoxic potential than commercially available antitumor agents cisplatin, oxaliplatin, and epirubicin.
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Affiliation(s)
- Tania Zhivkova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 25, Sofia 1113, Bulgaria.
| | - Daniela C Culita
- Ilie Murgulescu Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania.
| | - Abedulkadir Abudalleh
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 25, Sofia 1113, Bulgaria.
| | - Lora Dyakova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 23, Sofia 1113, Bulgaria
| | - Teodora Mocanu
- Ilie Murgulescu Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania.
| | - Augustin M Madalan
- Faculty of Chemistry, University of Bucharest, Regina Elisabeta Blvd. 4-12, 030018 Bucharest, Romania
| | - Milena Georgieva
- Institute of Molecular Biology "Roumen Tsanev", Acad. Georgi Bonchev Str., Bl. 21, Sofia 1113, Bulgaria
| | - George Miloshev
- Institute of Molecular Biology "Roumen Tsanev", Acad. Georgi Bonchev Str., Bl. 21, Sofia 1113, Bulgaria
| | - Anamaria Hanganu
- Faculty of Chemistry, University of Bucharest, Regina Elisabeta Blvd. 4-12, 030018 Bucharest, Romania
- "C.D. Nenitzescu" Institute of Organic and Supramolecular Chemistry of the Romanian Academy, Splaiul Independentei 202B, Bucharest, Romania
| | - Gabriela Marinescu
- Ilie Murgulescu Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania.
| | - Radostina Alexandrova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 25, Sofia 1113, Bulgaria.
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Ivanova B, Spiteller M. Crystallographic and theoretical study of the atypical distorted octahedral geometry of the metal chromophore of zinc(II) bis((1R,2R)-1,2-diaminocyclohexane) dinitrate. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Priola E, Giordana A, Gomila RM, Zangrando E, Andreo L, Rabezzana R, Operti L, Diana E, Mahmoudi G, Frontera A. Metallophilic interactions in silver(I) dicyanoaurate complexes. Dalton Trans 2022; 51:5818-5827. [DOI: 10.1039/d2dt00615d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This manuscript reports four new gold(I)−silver(I) complexes with 2-(2-pyridyl)-1,8-naphthyridine (pyNP) and terpyridine (terpy) as ancillary ligands, of formulation [Ag(pyNP)(Au(CN)2)]2 (1), [Ag2Au2(μ-CN)2(CN)2(pyNP)2] (2), [Ag2Au(μ-CN)2(terpy)2][Au(CN)2] (3) and [Ag4Au4(μ-CN)8(terpy)2(py)] (4). Complexes 1 and...
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Diana E, Priola E, Marabello D, Giordana A, Andreo J, Freire PTC, Benzi P, Operti L, Andreo L, Curetti N, Benna P. Crystal engineering of aurophilic supramolecular architectures and coordination polymers based on butterfly-like Copper-dicyanoaurate complexes: vapochromism, P-T behaviour and multi-metallic cocrystal formation. CrystEngComm 2022. [DOI: 10.1039/d1ce00964h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using the equilibrium properties of CuII in the presence of the chelating ligand and the characteristics of the dicyanoaurate anion, we were able to obtain a family of 10 bimetallic...
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Fujisawa K, Nemoto T, Morishima Y, Leznoff DB. Synthesis and Structural Characterization of a Silver(I) Pyrazolato Coordination Polymer. Molecules 2021; 26:molecules26041015. [PMID: 33671921 PMCID: PMC7919055 DOI: 10.3390/molecules26041015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/04/2021] [Accepted: 02/12/2021] [Indexed: 11/25/2022] Open
Abstract
Coinage metal(I)···metal(I) interactions are widely of interest in fields such as supramolecular assembly and unique luminescent properties, etc. Only two types of polynuclear silver(I) pyrazolato complexes have been reported, however, and no detailed spectroscopic characterizations have been reported. An unexpected synthetic method yielded a polynuclear silver(I) complex [Ag(μ-L1Clpz)]n (L1Clpz− = 4-chloride-3,5-diisopropyl-1-pyrazolate anion) by the reaction of {[Ag(μ-L1Clpz)]3}2 with (nBu4N)[Ag(CN)2]. The obtained structure was compared with the known hexanuclear silver(I) complex {[Ag(μ-L1Clpz)]3}2. The Ag···Ag distances in [Ag(μ-L1Clpz)]n are slightly shorter than twice Bondi’s van der Waals radius, indicating some Ag···Ag argentophilic interactions. Two Ag–N distances in [Ag(μ-L1Clpz)]n were found: 2.0760(13) and 2.0716(13) Å, and their N–Ag–N bond angles of 180.00(7)° and 179.83(5)° indicate that each silver(I) ion is coordinated by two pyrazolyl nitrogen atoms with an almost linear coordination. Every five pyrazoles point in the same direction to form a 1-D zig-zag structure. Some spectroscopic properties of [Ag(μ-L1Clpz)]n in the solid-state are different from those of {[Ag(μ-L1Clpz)]3}2 (especially in the absorption and emission spectra), presumably attributable to this zig-zag structure having longer but differently arranged intramolecular Ag···Ag interactions of 3.39171(17) Å. This result clearly demonstrates the different physicochemical properties in the solid-state between 1-D coordination polymer and metalacyclic trinuclear (hexanuclear) or tetranuclear silver(I) pyrazolate complexes.
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Affiliation(s)
- Kiyoshi Fujisawa
- Department of Chemistry, Ibaraki University, Mito, Ibaraki 310-8512, Japan; (T.N.); (Y.M.)
- Correspondence: (K.F.); (D.B.L.); Tel.: +81-29-853-8373 (K.F.); +1-778-782-4887 (D.B.L.)
| | - Takuya Nemoto
- Department of Chemistry, Ibaraki University, Mito, Ibaraki 310-8512, Japan; (T.N.); (Y.M.)
| | - Yui Morishima
- Department of Chemistry, Ibaraki University, Mito, Ibaraki 310-8512, Japan; (T.N.); (Y.M.)
| | - Daniel B. Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A1S6, Canada
- Correspondence: (K.F.); (D.B.L.); Tel.: +81-29-853-8373 (K.F.); +1-778-782-4887 (D.B.L.)
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Seifert TP, Naina VR, Feuerstein TJ, Knöfel ND, Roesky PW. Molecular gold strings: aurophilicity, luminescence and structure-property correlations. NANOSCALE 2020; 12:20065-20088. [PMID: 33001101 DOI: 10.1039/d0nr04748a] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This review covers the compound class of one-dimensional gold strings. These compounds feature a formally infinite repetition of gold complexes as monomers/repeating units that are held together by aurophilic interactions, i.e. direct gold-gold contacts. Their molecular structures are primarily determined in the solid state using single crystal X-ray diffraction. The chemical composition of the employed gold complexes is diverse and furthermore plays a key role in terms of structure characteristics and the resulting properties. One of the most common features of gold strings is their photoluminescence upon UV excitation. The emission energy is often dependent on the distance of adjacent gold ions and the electronic structure of the whole string. In terms of gold strings, these parameters can be fine-tuned by external stimuli such as solvent, pH value, pressure or mechanical stress. This leads to direct structure-property correlations, not only with regard to the photophysical properties, but also electric conductivity for potential application in nanoelectronics. Concerning these correlations, gold strings, consisting of self-assembled individual complexes as building blocks, are the ideal compound class to look at, as perturbations by an inhomogeneity in the ligand sphere (such as the end of a molecule) can be neglected. Therefore, the aim of this review is to shed light on the past achievements and current developments in this area.
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Affiliation(s)
- Tim P Seifert
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Vanitha R Naina
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Thomas J Feuerstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Nicolai D Knöfel
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany.
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Fernandez-Bartolome E, Cruz P, Galán LA, Cortijo M, Delgado-Martínez P, González-Prieto R, Priego JL, Jiménez-Aparicio R. Heteronuclear Dirhodium-Gold Anionic Complexes: Polymeric Chains and Discrete Units. Polymers (Basel) 2020; 12:E1868. [PMID: 32825168 PMCID: PMC7563758 DOI: 10.3390/polym12091868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 11/17/2022] Open
Abstract
In this article, we report on the synthesis and characterization of the tetracarboxylatodirhodium(II) complexes [Rh2(μ-O2CCH2OMe)4(THF)2] (1) and [Rh2(μ-O2CC6H4-p-CMe3)4(OH2)2] (2) by metathesis reaction of [Rh2(μ-O2CMe)4] with the corresponding ligand acting also as the reaction solvent. The reaction of the corresponding tetracarboxylato precursor, [Rh2(μ-O2CR)4], with PPh4[Au(CN)2] at room temperature, yielded the one-dimensional polymers (PPh4)n[Rh2(μ-O2CR)4Au(CN)2]n (R = Me (3), CH2OMe (4), CH2OEt (5)) and the non-polymeric compounds (PPh4)2{Rh2(μ-O2CR)4[Au(CN)2]2} (R = CMe3 (6), C6H4-p-CMe3 (7)). The structural characterization of 1, 3·2CH2Cl2, 4·3CH2Cl2, 5, 6, and 7·2OCMe2 is also provided with a detailed description of their crystal structures and intermolecular interactions. The polymeric compounds 3·2CH2Cl2, 4·3CH2Cl2, and 5 show wavy chains with Rh-Au-Rh and Rh-N-C angles in the ranges 177.18°-178.69° and 163.0°-170.4°, respectively. A comparative study with related rhodium-silver complexes previously reported indicates no significant influence of the gold or silver atoms in the solid-state arrangement of these kinds of complexes.
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Affiliation(s)
- Estefania Fernandez-Bartolome
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
| | - Paula Cruz
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
| | - Laura Abad Galán
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
| | - Miguel Cortijo
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
| | - Patricia Delgado-Martínez
- Unidad de Difracción de Rayos X, Centro de Asistencia a la Investigación de Técnicas Físicas y Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain;
| | - Rodrigo González-Prieto
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
| | - José L. Priego
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
| | - Reyes Jiménez-Aparicio
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain; (E.F.-B.); (P.C.); (L.A.G.); (M.C.); (J.L.P.)
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Priola E, Volpi G, Rabezzana R, Borfecchia E, Garino C, Benzi P, Martini A, Operti L, Diana E. Bridging Solution and Solid-State Chemistry of Dicyanoaurate: The Case Study of Zn–Au Nucleation Units. Inorg Chem 2019; 59:203-213. [DOI: 10.1021/acs.inorgchem.9b00961] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emanuele Priola
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Giorgio Volpi
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Roberto Rabezzana
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Elisa Borfecchia
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Claudio Garino
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Paola Benzi
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Andrea Martini
- Department of Physics, University of Turin, Via P. Giuria 1, 10125 Turin, Italy
- International Research Institute “Smart Materials”, Southern Federal University, Zorge Street 5, 344090 Rostov-on-Don, Russia
| | - Lorenza Operti
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Eliano Diana
- Department of Chemistry and NIS Center, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
- CriSDi, Interdepartmental Center for Crystallography, Via Pietro Giuria 7, 10125 Turin, Italy
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Shen M, Zhang C. Structures, metallophilic interactions and electronic excitation energy of linear metal chain complexes PdmPtn[PH2(CH2PH)m+n-2CH2PH2]3, a theoretical investigation. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Nicholas AD, Bullard RM, Pike RD, Patterson HH. Photophysical Investigation of Silver/Gold Dicyanometallates and Tetramethylammonium Networks: An Experimental and Theoretical Investigation. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aaron D. Nicholas
- Department of Chemistry University of Maine 5706 Orono, ME 04469‐ USA
| | - Rebeka M. Bullard
- Department of Chemistry University of Maine 5706 Orono, ME 04469‐ USA
| | - Robert D. Pike
- Department of Chemistry College of William and Mary 8795 Williamsburg, VA 23187‐ USA
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Ahern JC, Shilabin A, Henline KM, Pike RD, Patterson HH. Photophysical properties of {[Ag(CN)2]−}2complexes trapped in a supramolecular electron-acceptor organic framework. Dalton Trans 2014; 43:12044-9. [DOI: 10.1039/c4dt01110d] [Citation(s) in RCA: 10] [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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12
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Bikas R, Hosseini-Monfared H, Vasylyeva V, Sanchiz J, Alonso J, Barandiaran JM, Janiak C. Heteronuclear, mixed-metal Ag(i)–Mn(ii) coordination polymers with bridging N-pyridinylisonicotinohydrazide ligands: synthesis, crystal structures, magnetic and photoluminescence properties. Dalton Trans 2014; 43:11925-35. [DOI: 10.1039/c4dt01390e] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ghazzali M, Jaafar MH, Akerboom S, Alsalme A, Al-Farhan K, Reedijk J. A series of bimetallic chain coordination polymers bearing [Ag(PPh3)2] chromophores: Synthesis, structure and luminescence. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Schmidbaur H, Raubenheimer HG, Dobrzańska L. The gold-hydrogen bond, Au-H, and the hydrogen bond to gold, Au∙∙∙H-X. Chem Soc Rev 2013; 43:345-80. [PMID: 23999756 DOI: 10.1039/c3cs60251f] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the first part of this review, the characteristics of Au-H bonds in gold hydrides are reviewed including the data of recently prepared stable organometallic complexes with gold(I) and gold(III) centers. In the second part, the reports are summarized where authors have tried to provide evidence for hydrogen bonds to gold of the type Au∙∙∙H-X. Such interactions have been proposed for gold atoms in the Au(-I), Au(0), Au(I), and Au(III) oxidation states as hydrogen bonding acceptors and H-X units with X = O, N, C as donors, based on both experimental and quantum chemistry studies. To complement these findings, the literature was screened for examples with similar molecular geometries, for which such bonding has not yet been considered. In the discussion of the results, the recently issued IUPAC definitions of hydrogen bonding and the currently accepted description of agostic interactions have been used as guidelines to rank the Au∙∙∙H-X interactions in this broad range of weak chemical bonding. From the available data it appears that all the intra- and intermolecular Au∙∙∙H-X contacts are associated with very low binding energies and non-specific directionality. To date, the energetics have not been estimated, because there are no thermochemical and very limited IR/Raman and temperature-dependent NMR data that can be used as reliable references. Where conspicuous structural or spectroscopic effects have been observed, explanations other than hydrogen bonding Au∙∙∙H-X can also be advanced in most cases. Although numerous examples of short Au∙∙∙H-X contacts exist in the literature, it seems, at this stage, that these probably make only very minor contributions to the energy of a given system and have only a marginal influence on molecular conformations which so far have most often attracted researchers to this topic. Further, more dedicated investigations will be necessary before well founded conclusions can be drawn.
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Affiliation(s)
- Hubert Schmidbaur
- Department Chemie, Technische Universität München, Garching, Germany.
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15
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Berenguer JR, Fernández J, Lalinde E, Sánchez S. New Trans-Configured Acetylide–Cyanide Platinum(II) Anions: Spectroscopic and Optical Studies. Organometallics 2013. [DOI: 10.1021/om301134k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jesús R. Berenguer
- Departamento de
Quı́mica−Centro de Investigación en Sı́ntesis
Quı́mica, Universidad de La Rioja, 26006 Logroño, Spain
| | - Julio Fernández
- Departamento de
Quı́mica−Centro de Investigación en Sı́ntesis
Quı́mica, Universidad de La Rioja, 26006 Logroño, Spain
| | - Elena Lalinde
- Departamento de
Quı́mica−Centro de Investigación en Sı́ntesis
Quı́mica, Universidad de La Rioja, 26006 Logroño, Spain
| | - Sergio Sánchez
- Departamento de
Quı́mica−Centro de Investigación en Sı́ntesis
Quı́mica, Universidad de La Rioja, 26006 Logroño, Spain
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Synthesis, structure and fluorescent properties of 2-(1H-benzoimidazol-2-yl)quinolin-8-ol ligands and their zinc complexes. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Synthesis, structure and photophysical properties of 2-benzhydryl-4-methyl-6-(aryliminomethyl)phenol ligands and the zinc complexes thereof. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.03.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Ghazzali M, Jaafar MH, Al-Farhan K, Akerboom S, Reedijk J. Synthesis, structure and luminescence of new dinuclear cyanido-bridged AgI–AuI one-dimensional coordination polymer. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Amo-Ochoa P, Delgado S, Gallego A, Gómez-García CJ, Jiménez-Aparicio R, Martínez G, Perles J, Torres MR. Structure and properties of one-dimensional heterobimetallic polymers containing dicyanoaurate and dirhodium(II) fragments. Inorg Chem 2012; 51:5844-9. [PMID: 22548490 DOI: 10.1021/ic3004307] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and characterization of compound [Rh(2)(O(2)CEt)(4)(H(2)O)(2)] (1) and one-dimensional heterobimetallic polymers K(n){Rh(2)(O(2)CEt)(4)[Au(CN)(2)]}(n) (2) and K(n){Rh(2)(O(2)CMe)(4)[Au(CN)(2)]}(n)·4nH(2)O (3), constructed from dirhodiumtetracarboxylato units, [Rh(2)(O(2)CR)(4)](+), and dicyanoaurate, [Au(CN)(2)](-), fragments are described. In both compounds 2 and 3 the resulting polymeric chains are nonlinear and have in common similar structural parameters, although the solid state supramolecular arrangement is very different. These structural differences explain the fact that complex 2 displays aurophilic interactions while this type of interactions are absent in complex 3. As a result, compound 2 shows rich blue luminescent properties whereas compound 3 is not luminescent. The electrical conductivity in solid state of compounds 2 and 3 is also studied.
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Affiliation(s)
- Pilar Amo-Ochoa
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, 28040-Madrid, Spain.
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Lefebvre J, Korčok JL, Katz MJ, Leznoff DB. Vapochromic behaviour of M[Au(CN)2]2-based coordination polymers (M = Co, Ni). SENSORS 2012; 12:3669-92. [PMID: 22737031 PMCID: PMC3376558 DOI: 10.3390/s120303669] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 03/09/2012] [Accepted: 03/13/2012] [Indexed: 11/16/2022]
Abstract
A series of M[Au(CN)2]2(analyte)x coordination polymers (M = Co, Ni; analyte = dimethylsulfoxide (DMSO), N,N-dimethylformamide (DMF), pyridine; x = 2 or 4) was prepared and characterized. Addition of analyte vapours to solid M(μ-OH2)[Au(CN)2]2 yielded visible vapochromic responses for M = Co but not M = Ni; the IR νCN spectral region changed in every case. A single crystal structure of Zn[Au(CN)2]2(DMSO)2 revealed a corrugated 2-D layer structure with cis-DMSO units. Reacting a Ni(II) salt and K[Au(CN)2] in DMSO yielded the isostructural Ni[Au(CN)2]2(DMSO)2 product. Co[Au(CN)2]2(DMSO)2 and M[Au(CN)2]2(DMF)2 (M = Co, Ni) complexes have flat 2-D square-grid layer structures with trans-bound DMSO or DMF units; they are formed via vapour absorption by solid M(μ-OH2)[Au(CN)2]2 and from DMSO or DMF solution synthesis. Co[Au(CN)2]2(pyridine)4 is generated via vapour absorption by Co(μ-OH2)[Au(CN)2]2; the analogous Ni complex is synthesized by immersion of Ni(μ-OH2)[Au(CN)2]2 in 4% aqueous pyridine. Similar immersion of Co(μ-OH2)[Au(CN)2]2 yielded Co[Au(CN)2]2(pyridine)2, which has a flat 2-D square-grid structure with trans-pyridine units. Absorption of pyridine vapour by solid Ni(μ-OH2)[Au(CN)2]2 was incomplete, generating a mixture of pyridine-bound complexes. Analyte-free Co[Au(CN)2]2 was prepared by dehydration of Co(μ-OH2)[Au(CN)2]2 at 145 °C; it has a 3-D diamondoid-type structure and absorbs DMSO, DMF and pyridine to give the same materials as by vapour absorption from the hydrate.
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Affiliation(s)
- Julie Lefebvre
- Department of Chemistry, Simon Fraser University, Burnaby, BC, Canada.
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