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Bavi M, Nabavizadeh SM, Hosseini FN, Hoseini SJ, Friedel JN, Klein A. Cross-Coupling versus Homo-Coupling at a Pt(IV) Center: Computational and Experimental Approaches. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Marzieh Bavi
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - S. Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | | | - S. Jafar Hoseini
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Joshua Nicolas Friedel
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Axel Klein
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
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Patra SC, Saha Roy A, Banerjee S, Banerjee A, Das Saha K, Bhadra R, Pramanik K, Ghosh P. Palladium(ii) and platinum(ii) complexes of glyoxalbis(N-aryl)osazone: molecular and electronic structures, anti-microbial activities and DNA-binding study. NEW J CHEM 2019. [DOI: 10.1039/c9nj00223e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A new family of palladium(ii) and platinum(ii) complexes of redox non-innocent osazone ligands that exhibit moderate antileishmanial activity were isolated.
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Affiliation(s)
- Sarat Chandra Patra
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103
- India
- Department of Chemistry
| | - Amit Saha Roy
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103
- India
- Department of Chemistry
| | - Saswati Banerjee
- Cancer Biology & Inflammatory Disorder
- Indian Institute of Chemical Biology
- Kolkata 700032
- India
| | - Ananya Banerjee
- Department of Chemistry
- Bijaygarh Jyotish Roy College
- Kolkata-700032
- India
| | - Krishna Das Saha
- Cancer Biology & Inflammatory Disorder
- Indian Institute of Chemical Biology
- Kolkata 700032
- India
| | - Ranjan Bhadra
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103
- India
| | | | - Prasanta Ghosh
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103
- India
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Lepski R, Lüning A, Stirnat K, Klein A. Unexpected formation of [(Me2-Xyl-DAB)Pd(η3-6-methyloct-2-en-1-id)][SbF6] (Me2-Xyl-DAB = 2,3-dimethyl-1,4-bis(2,6-dimethylphenyl)-diazabuta-1,3-diene). J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.07.071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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García-Herbosa G, McNamara WR, Brennessel WW, Cuevas JV, Sur S, Eisenberg R. Coordination of diorganotellurides to cobalt(III) in cobaloximes. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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5
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Lazzaro DP, Fanwick PE, McMillin DR. Arylated versus Cyclometalated Platinum(II) Polypyridines: Photoluminescence from Pt(4′-R-trpy)Ph+ Systems (R = NMe2, N-Pyrrolidinyl, or 1-Pyrenyl). Inorg Chem 2012; 51:10474-6. [PMID: 23036100 DOI: 10.1021/ic301593b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel P. Lazzaro
- Department of Chemistry, Purdue University,
560 Oval
Dr., West Lafayette, Indiana 47907-2084, United States
| | - Phillip E. Fanwick
- Department of Chemistry, Purdue University,
560 Oval
Dr., West Lafayette, Indiana 47907-2084, United States
| | - David R. McMillin
- Department of Chemistry, Purdue University,
560 Oval
Dr., West Lafayette, Indiana 47907-2084, United States
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Moustafa ME, McCready MS, Puddephatt RJ. Switching by Photochemical trans–cis Isomerization of Azobenzene Substituents in Organoplatinum Complexes. Organometallics 2012. [DOI: 10.1021/om3005405] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mohamed E. Moustafa
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - Matthew S. McCready
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
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Liu W, Heinze K. Rhenium(I) and platinum(II) complexes with diimine ligands bearing acidic phenol substituents: hydrogen-bonding, acid-base chemistry and optical properties. Dalton Trans 2010; 39:9554-64. [PMID: 20820607 DOI: 10.1039/c0dt00393j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Tricarbonylchloro-rhenium(i) (1-4) and catecholato-platinum(ii) complexes (6, 7) of diimine ligands bearing phenol and O-protected phenol substituents have been prepared and fully characterised including single crystal structure analyses of 1, 4 and 7. The redox behaviour of the catecholato platinum(ii) complexes 6 and 7 has been probed by cyclic voltammetry, preparative oxidation and EPR spectroscopy (6˙(+), 7˙(+)). Reversible deprotonation of the hydroxy substituted complexes 1, 3 and 6 to 1(-), 3(-) and 6(-) resulted in significant changes in their electronic spectra. The luminescence properties of the diamagnetic complexes have been investigated using emission spectroscopy. DFT and TD-DFT calculations were invoked to shed some light onto the geometric and electronic structures as well as the experimental spectroscopic properties of the neutral complexes 1-7, the radical cations 6˙(+) and 7˙(+) and the conjugate bases 1(-), 3(-) and 6(-).
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Affiliation(s)
- Wei Liu
- Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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Dogan A, Kavakli C, Sieger M, Niemeyer M, Sarkar B, Kaim W. Structural and Spectroscopic Evidence for Marginal Metal-to-Ligand Charge Transfer in Complexes Pt(abpy)Me3X, abpy = 2,2′-Azobispyridine, X = Cl, Br, I. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Potter RG, Hughes TS. Predicting the UV−Vis Spectra of Tetraarylcyclopentadienones: Using DFT Molecular Orbital Energies to Model Electronic Transitions of Organic Materials. J Org Chem 2008; 73:2995-3004. [DOI: 10.1021/jo701676x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert G. Potter
- Department of Chemistry, Cook Physical Sciences Building, 82 University Place, University of Vermont, Burlington, Vermont 05405
| | - Thomas S. Hughes
- Department of Chemistry, Cook Physical Sciences Building, 82 University Place, University of Vermont, Burlington, Vermont 05405
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Kavakli C, Gabrielsson A, Sieger M, Schwederski B, Niemeyer M, Kaim W. Reversible radical complex formation of an organometallic diplatinum(IV) compound. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.01.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Blanco Rodríguez AM, Gabrielsson A, Motevalli M, Matousek P, Towrie M, Sebera J, Zális S, Vlcek A. Ligand-to-Diimine/Metal-to-Diimine Charge-Transfer Excited States of [Re(NCS)(CO)3(α-diimine)] (α-diimine = 2,2‘-bipyridine, di-iPr-N,N-1,4-diazabutadiene). A Spectroscopic and Computational Study. J Phys Chem A 2005; 109:5016-25. [PMID: 16833853 DOI: 10.1021/jp044114z] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two new complexes fac-[Re(NCS)(CO)3(N,N)] (N,N = 2,2'-bipyridine (bpy), di-iPr-N,N-1,4-diazabutadiene (iPr-DAB)) were synthesized and their molecular structures determined by X-ray diffraction. UV-vis absorption, resonance Raman, emission, and picosecond time-resolved IR spectra were measured experimentally and calculated with TD-DFT. A good agreement between experimental and calculated ground- and excited-state spectra is obtained, but only if the solvent (MeCN) is included into calculations and excited state structures are fully optimized at the TD-DFT level. The lowest excited states of the bpy and iPr-DAB complexes are assigned by TD-DFT as 3aA' by comparison of calculated and experimental IR spectra. Excited-state lifetimes of 23 ns and ca. 625 ps were determined for the bpy and DAB complex, respectively, in a fluid solution at room temperature. Biexponential emission decay (1.3, 2.7 micros) observed for [Re(NCS)(CO)3(bpy)] in a 77 K glass indicates the presence of two unequilibrated emissive states. Low-lying electronic transitions and excited states of both complexes have a mixed NCS --> N,N ligand-to-ligand and Re --> N,N metal-to-ligand charge-transfer character (LLCT/MLCT). It originates in mixing between Re d(pi) and NCS pi characters in high-lying occupied MOs. Experimentally, the LLCT/MLCT mixing in the lowest excited state is manifested by shifting the nu(CO) and nu(NC) IR bands to higher and lower wavenumbers, respectively, upon excitation. Resonant enhancement of both nu(CO) and nu(NC) Raman bands indicates that the same LLCT/MLCT character mixing occurs in the lowest allowed electronic transition.
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Affiliation(s)
- Ana Maria Blanco Rodríguez
- Department of Chemistry and Centre for Materials Research, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom
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Klein A, Feth M, Bertagnolli H, Záliš S. On the Electronic Structure of Mesitylnickel Complexes of α‐Diimines — Combining Structural Data, Spectroscopy and Calculations. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300956] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Axel Klein
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany, Fax: +49‐(0)711‐685‐4165
| | - Martin P. Feth
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany, Fax: +49‐(0)711‐685‐4443
| | - Helmut Bertagnolli
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany, Fax: +49‐(0)711‐685‐4443
| | - Stanislav Záliš
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 18 000 Prague 8, Czech Republic, Present address: Institut für Chemie, Karl‐Franzens‐Universität Graz, Schubertstrasse 1, 8010 Graz, Austria, Fax: +43‐(0)316‐380‐9835
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Klein A, Slageren J, Záliš S. Co-Ligand Involvement in Ground and Excited States of Electron-Rich (Polypyridyl)PtII Complexes. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200200617] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Klein A, van Slageren J, Zális S. Participation of co-ligands in electronic transitions of platinum(II) diazabutadiene complexes. Inorg Chem 2002; 41:5216-25. [PMID: 12354055 DOI: 10.1021/ic025547o] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The low-lying electronic transitions and photochemical reactions of a series of [((i)Pr-DAB)Pt(R)(2)] (where the co-ligand R = CH(3), CD(3), adme, neop, neoSi, C(triple bond)C(t)Bu, C(triple bond)CPh, Ph, Mes) compounds were studied using both experimental (electronic absorption and resonance Raman spectroscopy) and theoretical (density functional theory, DFT) techniques. The high-lying filled orbitals were revealed to have a significant co-ligand contribution in the case of alkyl complexes, while this contribution is predominant for the complexes with unsaturated co-ligands. Because the electronic transition removes electron density from the sigma(Pt-C) bond in the former complexes, it is best described as a metal-to-ligand charge transfer transition (MLCT) with partial sigma-bond-to-ligand charge transfer (SBLCT) character. Because the sigma(Pt-C) orbital is not involved in the HOMOs of the latter complexes, the low-lying transitions were characterized as mixed MLCT/L'LCT, where L'LCT stands for ligand-to-ligand charge transfer from the pi system of the unsaturated co-ligand to the pi((i)Pr-DAB) orbital. The alkyl complexes are photoreactive on visible light irradiation with Pt-C bond homolysis as the primary step. The efficiency of the photoreaction increases with increasing sigma donor strength of the alkyl ligand. The absolute quantum yield is quite low. The other complexes are virtually photostable, except when irradiated at relatively high energies.
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Affiliation(s)
- Axel Klein
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
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