1
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Mukhopadhyay N, Sengupta A, Lloret F, Mukherjee R. Phenoxazinyl Zn(II) diradical complex formed via redox-driven cyclization of a 2-aminophenol-based N 3O ligand. Isolation of the modified N 3 ligand radical and its Ni(II) complex. Dalton Trans 2024; 53:6515-6519. [PMID: 38563205 DOI: 10.1039/d4dt00374h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Aerobic reaction between the pyridine-2-carboxamide-2-aminophenol N3O ligand (H3L1) and Zn(ClO4)2·6H2O in CH3CN affords an N3 phenoxazinylate coordinated Zn(II) complex; its diradical electronic structure [ZnII{(L1*)˙-}2] has been elucidated from redox, spectroscopic (UV-VIS and EPR), and magnetic measurements and DFT calculations. Isolation and characterization of the metal-assisted redox-driven modified N3 ligand as a radical cation (H2L1*)˙+ and its Ni(II)-diradical complex [NiII{(L1*)˙-}2] have also been achieved.
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Affiliation(s)
- Narottam Mukhopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Arunava Sengupta
- Department of Chemistry & Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Jharkhand 826004, India
| | - Francesc Lloret
- Department de Química Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980 Paterna, València, Spain
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
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2
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Qu YX, Liao PY, Chen YC, Tong ML. Functional lanthanide complexes with N,N′-bis(2-hydroxybenzyl)-N,N′-bis(pyridin-2-ylmethyl)ethylenediamine (H2bbpen) derivatives: Coordination chemistry, single-molecule magnetism and optical properties. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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3
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Sharma A, Mejia K, Ueno H, Zhou W, Chiang L. Copper complexes of strongly electron rich and deficient salen ligands. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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McKee ML. Exploring the Reaction Mechanism of C-H Oxidation by Copper-Salen Complexes. J Phys Chem A 2022; 126:4969-4980. [PMID: 35861503 DOI: 10.1021/acs.jpca.2c03344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism of C-H oxidation of propylene (C3H6) and 1-phenyl-1-pentyne (C3H7-C≡C-Ph) by HOOR (R═Me, tBu) and 3O2 by a copper-salen complex was explored by computations. The most noteworthy step is the complexation of two Cu salens to the peroxide to form either the LCuOH/LCuOR pair or an OH-bridged complex LCu(μ-OH)CuL plus OR. The latter pathway involves an avoided crossing of two triplet electronic states. The LCuOH complex can abstract a hydrogen atom from C3H6 and the C3H5 radical plus 3O2 forms the complex LCuOOC3H5. Migration of a hydrogen to the proximal oxygen atom reforms LCuOH and acrolein HC(O)CH═CH2.
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Affiliation(s)
- Michael L McKee
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama36849, United States
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5
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Fricker AE, Samolova E, Rheingold AL, Green DB, Brereton KR, Fritsch JM. Synthesis, spectroscopy, and crystallography of magnesium, aluminum, and zinc complexes supported by a tridentate ketoiminate. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Sang YL, Zou LF, Jin RF, Liu YH, Lin XS, Zhang XH. A series of zinc(II) and copper(II) complexes derived from 5-bromo-2((2-(dimethylamino)ethylimino)methyl)phenol: syntheses, characterization, crystal structures and antimicrobial activity. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1938015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Ya-Li Sang
- College of Chemistry and Life Science, Chifeng University, Chifeng 024000, P.R. China
| | - Li-Fei Zou
- College of Chemistry and Life Science, Chifeng University, Chifeng 024000, P.R. China
| | - Rui-Fa Jin
- College of Chemistry and Life Science, Chifeng University, Chifeng 024000, P.R. China
| | - Yan-Hua Liu
- College of Chemistry and Life Science, Chifeng University, Chifeng 024000, P.R. China
| | - Xue-Song Lin
- College of Chemistry and Life Science, Chifeng University, Chifeng 024000, P.R. China
| | - Xin-Hao Zhang
- College of Chemistry and Life Science, Chifeng University, Chifeng 024000, P.R. China
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7
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Hylland KT, Gerz I, Wragg DS, Øien‐Ødegaard S, Tilset M. The Reactivity of Multidentate Schiff Base Ligands Derived from Bi‐ and Terphenyl Polyamines towards M(II) (M=Ni, Cu, Zn, Cd) and M(III) (M=Co, Y, Lu). Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Knut Tormodssønn Hylland
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Isabelle Gerz
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - David S. Wragg
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Sigurd Øien‐Ødegaard
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Mats Tilset
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
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8
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Squarcina A, Fehn D, Senft L, Langer J, Ivanović‐Burmazović I. Dinuclear Zn Complex: Phenoxyl Radical Formation Driven by Superoxide Coordination. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Andrea Squarcina
- Department of Chemistry Ludwig-Maximilians-Universität München München Butenandtstr. 5–13, Haus D 81377 München Germany
| | - Dominik Fehn
- Department of Chemistry and Pharmacy Friedrich-Alexander-University Erlangen-Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Laura Senft
- Department of Chemistry and Pharmacy Friedrich-Alexander-University Erlangen-Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Jens Langer
- Department of Chemistry and Pharmacy Friedrich-Alexander-University Erlangen-Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry Ludwig-Maximilians-Universität München München Butenandtstr. 5–13, Haus D 81377 München Germany
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9
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Mouchel Dit Leguerrier D, Barré R, Bryden M, Imbert D, Philouze C, Jarjayes O, Luneau D, Molloy JK, Thomas F. Structural and spectroscopic investigations of nine-coordinate redox active lanthanide complexes with a pincer O,N,O ligand. Dalton Trans 2020; 49:8238-8246. [PMID: 32510087 DOI: 10.1039/d0dt01388a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The lanthanide complexes EuL3, GdL3, YbL3 and LuL3 of the N,N'-bis(2-hydroxy-di-3,5-tert-butylphenyl)amine were prepared. The X-Ray crystal structures of GdL3 and LuL3 demonstrated a nine-coordinate sphere with three ligand molecules under their anionic diamagnetic form (Cat-N-BQ)-. The complexes showed three oxidation events (Eox11/2 = 0.15-0.16 V, E1/22 = 0.51-55 V, and E1/23 = 0.75-0.78 V vs. Fc+/Fc) via cyclic voltammetry, corresponding to the successive oxidation of the aminophenolate moeities to iminosemiquinone species. The complexes GdL3 and YbL3 were characterized by EPR spectroscopy, allowing for the determination of the zero field splitting (ZFS) parameters in the first case. The monocations (LnL3)+ and monoanions (LnL3)- were electrochemically generated (Ln = Eu, Gd, Yb, Lu), as well as the dications YbL32+ and LuL32+. The spins are antiferromagnetically exchange coupled in the diradical species LuL32+ (|D| = 260 MHz, E = 0). All the complexes (incl. neutral) possess a strong absorption band in the NIR region (730-840 nm, ε > 19 mM-1 cm-1) corresponding to ligand-based transitions.
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10
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Verma SK, Savani C, Singh VK. Synthesis, Photophysical, Thermal and Crystallographic Studies of 3‐Aminocoumarin Based Monobasic
κ
3
‐O,N,O‐
tridentate
/ κ
2
‐
N,O‐
bidentate Schiff Base Divalent Complexes. ChemistrySelect 2019. [DOI: 10.1002/slct.201903988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sanjay K Verma
- Department of ChemistryFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
| | - Chirag Savani
- Department of ChemistryFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
| | - Vinay K. Singh
- Department of ChemistryFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
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11
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Colomban C, Philouze C, Molton F, Leconte N, Thomas F. Copper(II) complexes of N3O ligands as models for galactose oxidase: Effect of variation of steric bulk of coordinated phenoxyl moiety on the radical stability and spectroscopy. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Chiang L, Wasinger EC, Shimazaki Y, Young V, Storr T, Stack TDP. Electronic Structure and Reactivity Studies of a Nonsymmetric One-Electron Oxidized Cu II Bis-phenoxide Complex. Inorganica Chim Acta 2018; 481:151-158. [PMID: 30581226 PMCID: PMC6301013 DOI: 10.1016/j.ica.2017.09.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The tetradentate mixed imino/amino phenoxide ligand (N-(3,5-di-tert-butylsalicylidene)-N'-(2-hydroxyl-3,5-di-tert-butylbenzyl))-trans-1,2-cyclohexanediamine (salalen) was complexed with CuII, and the resulting Cu complex (2) was characterized by a number of experimental techniques and theoretical calculations. Two quasi-reversible redox processes for 2, as observed by cyclic voltammetry, demonstrated the potential stability of oxidized forms, and also the increased electron-donating ability of the salalen ligand in comparison to the salen analogue. The electronic structure of the one-electron oxidized [2]+ was then studied in detail, and Cu K-edge X-ray Absorption Spectroscopy (XAS) measurements confirmed a CuII-phenoxyl radical complex in solution. Subsequent resonance Raman (rR) and variable temperature 1H NMR studies, coupled with theoretical calculations, showed that [2• ]+ is a triplet (S = 1) CuII-phenoxyl radical species, with localization of the radical on the more electron-rich aminophenoxide. Attempted isolation of X-ray quality crystals of [2• ]+ afforded [2H]+, with a protonated phenol bonded to CuII, and an additional H-bonding interaction with the SbF6 - counterion. Stoichiometric reaction of dilute solutions of [2• ]+ with benzyl alcohol showed that the complex reacted in a similar manner as the oxidized CuII-salen analogue, and does not exhibit a substrate-binding pre-equilibrium as observed for the oxidized bisaminophenoxide CuII-salan derivative.
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Affiliation(s)
- Linus Chiang
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Erik C Wasinger
- Department of Chemistry and Biochemistry, California State University, Chico, CA 95928, USA
| | - Yuichi Shimazaki
- College of Science, Ibaraki University. Bunkyo, Mito, 310-8512, Japan
| | - Victor Young
- Department of Chemistry, The University of Minnesota, Minneapolis, MN 55455, USA
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, Burnaby, BC, Canada
| | - T Daniel P Stack
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
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13
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Radical formation in polymeric nickel complexes with N2O2 Schiff base ligands: An in situ ESR and UV–vis–NIR spectroelectrochemical study. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.131] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Gautam R, Chang TM, Astashkin AV, Lincoln KM, Tomat E. Propentdyopent: the scaffold of a heme metabolite as an electron reservoir in transition metal complexes. Chem Commun (Camb) 2017; 52:6585-8. [PMID: 27109437 DOI: 10.1039/c6cc01961g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dipyrrin-1,9-dione scaffold of heme metabolite propendyopent coordinates late transition metals (Co, Ni, Cu, and Zn) forming homoleptic, pseudo-tetrahedral complexes. Electrochemical and spectroscopic studies reveal that the monoanionic, bidentate ligands behave as electron reservoirs as the complexes reversibly host one or two ligand-based radicals.
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Affiliation(s)
- R Gautam
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson AZ 85721, USA.
| | - T M Chang
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson AZ 85721, USA.
| | - A V Astashkin
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson AZ 85721, USA.
| | - K M Lincoln
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson AZ 85721, USA.
| | - E Tomat
- University of Arizona, Department of Chemistry and Biochemistry, 1306 E. University Blvd., Tucson AZ 85721, USA.
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15
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Molloy JK, Jarjayes O, Philouze C, Fedele L, Imbert D, Thomas F. A redox active switch for lanthanide luminescence in phenolate complexes. Chem Commun (Camb) 2017; 53:605-608. [DOI: 10.1039/c6cc07942c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The reversible oxidation of coordinated phenolates into phenoxyl radicals results in a dramatic quenching (>95%) of the luminescence of the f metal ion.
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Affiliation(s)
- J. K. Molloy
- Département de Chimie Moléculaire
- Chimie Inorganique Redox (CIRE)
- UMR CNRS 5250
- Université Grenoble-Alpes
- 38041 Grenoble Cedex 9
| | - O. Jarjayes
- Département de Chimie Moléculaire
- Chimie Inorganique Redox (CIRE)
- UMR CNRS 5250
- Université Grenoble-Alpes
- 38041 Grenoble Cedex 9
| | - C. Philouze
- Département de Chimie Moléculaire
- Chimie Inorganique Redox (CIRE)
- UMR CNRS 5250
- Université Grenoble-Alpes
- 38041 Grenoble Cedex 9
| | - L. Fedele
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination SCIB
- UMR-E3 CEA-UJF
- INAC, CEA-Grenoble
- 38054 Grenoble Cedex 09
- France
| | - D. Imbert
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination SCIB
- UMR-E3 CEA-UJF
- INAC, CEA-Grenoble
- 38054 Grenoble Cedex 09
- France
| | - F. Thomas
- Département de Chimie Moléculaire
- Chimie Inorganique Redox (CIRE)
- UMR CNRS 5250
- Université Grenoble-Alpes
- 38041 Grenoble Cedex 9
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16
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Ali A, Dhar D, Barman SK, Lloret F, Mukherjee R. Nickel(II) Complex of a Hexadentate Ligand with Two o-Iminosemiquinonato(1-) π-Radical Units and Its Monocation and Dication. Inorg Chem 2016; 55:5759-71. [PMID: 27232547 DOI: 10.1021/acs.inorgchem.5b02688] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Aerobic reaction of a hexadentate redox-active o-aminophenol-based ligand, H4L(3) = N,N'-bis(2-hydroxy-3,5-di-tert-butylphenyl)-2,2'-diamino(diphenyldithio)-ethane, in CH3OH with Ni(II)(O2CCH3)2·4H2O and Et3N afforded isolation of a reddish-brown crystalline solid [Ni(L(3))] 1. Cyclic voltammetry (CV) experiment exhibits two oxidative responses at E1/2 = 0.09 and 0.53 V vs SCE (saturated calomel electrode). Chemical oxidation of 1 in air by [Fe(III)(η(5)-C5H5)2][PF6] and AgBF4 in CH2Cl2 led to the isolation of one-electron oxidized species [1](1+) as purple [1][PF6]·CH2Cl2 and two-electron oxidized species [1](2+) as dark purple [1][BF4]2·CH2Cl2, respectively. X-ray crystallographic analysis at 100(2) K unambiguously established that the ligand is present in [Ni(II){(L(ISQ)O,N)(•-)}{(L(ISQ)O,N)(•-)}{(LS,S)(0)}] 1, [Ni(II){(L(IBQ)O,N)(0)}{(L(ISQ)O,N)(•-)}{(LS,S)(0)}][PF6]·CH2Cl2, and [Ni(II){(L(IBQ)O,N)(0)}{(L(IBQ)O,N)(0)}{(LS,S)(0)}][BF4]2·CH2Cl2, as monoanionic o-iminosemiquinonate(1-) π-radical (Srad = 1/2) (L(ISQ))(•-) and neutral o-iminoquinone (L(IBQ))(0) redox-levels. Complexes 1, [1][PF6]·CH2Cl2, and [1][BF4]2·CH2Cl2 possess an S = 2, 3/2, and 1 ground-state, respectively, established by temperature-dependent (2-300 K) magnetic behavior of 1 and [1][PF6]·CH2Cl2, and a μeff value of [1][BF4]2·CH2Cl2 at 300 K. Both 1 and [1][PF6]·CH2Cl2 exhibit ferromagnetic exchange-coupling between the two electrons of Ni(II) and two/one ligand π-radicals, respectively. The redox processes are shown to be ligand-based. Spectroscopic and redox properties, and density functional theory (DFT) calculations at the CAM-B3LYP-level of theory adequately describe the electronic structure of 1, [1](1+), and [1](2+). The observed UV-vis-NIR absorptions for 1, [1][PF6]·CH2Cl2, and [1][BF4]2·CH2Cl2 have been assigned, based on time-dependent (TD)-DFT calculations.
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Affiliation(s)
- Akram Ali
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India
| | - Debanjan Dhar
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India
| | - Suman K Barman
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India.,Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata , Mohanpur 741 246, India
| | - Francesc Lloret
- Departament de Quımíca, Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de Valeńcia , Polígono de la Coma, s/n, 46980-Paterna, València, Spain
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India.,Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata , Mohanpur 741 246, India
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17
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Cuesta-Aluja L, Campos-Carrasco A, Castilla J, Reguero M, Masdeu-Bultó AM, Aghmiz A. Highly active and selective Zn(II)-NN′O Schiff base catalysts for the cycloaddition of CO 2 to epoxides. J CO2 UTIL 2016. [DOI: 10.1016/j.jcou.2016.01.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Skara G, Gimferrer M, De Proft F, Salvador P, Pinter B. Scrutinizing the Noninnocence of Quinone Ligands in Ruthenium Complexes: Insights from Structural, Electronic, Energy, and Effective Oxidation State Analyses. Inorg Chem 2016; 55:2185-99. [DOI: 10.1021/acs.inorgchem.5b02543] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Gabriella Skara
- Eenheid Algemene Chemie (ALGC), Member
of the QCMM VUB-UGent Alliance Research Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium
| | - Marti Gimferrer
- Institut de Química
Computacional i Catàlisi (IQCC) i Department de Química, Universitat de Girona, 17071 Girona, Spain
| | - Frank De Proft
- Eenheid Algemene Chemie (ALGC), Member
of the QCMM VUB-UGent Alliance Research Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium
| | - Pedro Salvador
- Institut de Química
Computacional i Catàlisi (IQCC) i Department de Química, Universitat de Girona, 17071 Girona, Spain
| | - Balazs Pinter
- Eenheid Algemene Chemie (ALGC), Member
of the QCMM VUB-UGent Alliance Research Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium
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19
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Dhara AK, Singh UP, Ghosh K. Radical pathways and O2 participation in benzyl alcohol oxidation, and catechol and o-aminophenol oxidase activity studies with novel zinc complexes: an experimental and theoretical investigation. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00356g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diphenoxo bridged dinuclear zinc complexes were found to be capable of oxidation of benzyl alcohol, catechol and o-aminophenol.
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Affiliation(s)
- Ashish Kumar Dhara
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Uttrakhand
- India
| | - Udai P. Singh
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Uttrakhand
- India
| | - Kaushik Ghosh
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Uttrakhand
- India
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20
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Chiang L, Clarke RM, Herasymchuk K, Sutherland M, Prosser KE, Shimazaki Y, Storr T. Electronic Structure Evaluation of an Oxidized Tris(methoxy)-Substituted Ni Salen Complex. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501144] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Chiang L, Herasymchuk K, Thomas F, Storr T. Influence of Electron-Withdrawing Substituents on the Electronic Structure of Oxidized Ni and Cu Salen Complexes. Inorg Chem 2015; 54:5970-80. [DOI: 10.1021/acs.inorgchem.5b00783] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Linus Chiang
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Khrystyna Herasymchuk
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Fabrice Thomas
- Département de Chimie Moléculaire,
Chimie Inorganique Redox (CIRE), UMR-5250, Université Grenoble Alpes, BP 53, 38041 Grenoble
Cedex 9, France
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
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22
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Ali A, Barman SK, Mukherjee R. Palladium(II) Complex of a Redox-Active Amidophenolate-Based O,N,S,N Ligand: Its Monocation and Dication and Reactivity with PPh3. Inorg Chem 2015; 54:5182-94. [DOI: 10.1021/ic503103e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Akram Ali
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Suman K. Barman
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
- Department of Chemistry, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
- Department of Chemistry, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
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23
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Gerling KA, Rezayee NM, Rheingold AL, Green DB, Fritsch JM. Synthesis and structures of bis-ligated zinc complexes supported by tridentate ketoimines that initiate L-lactide polymerization. Dalton Trans 2014; 43:16498-508. [PMID: 25256407 DOI: 10.1039/c4dt01607f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Eight bis-ligated, homoleptic, zinc complexes were synthesized through the reaction of NNO Schiff base ketoimines bearing varying substituents with diethyl zinc in an inert atmosphere glovebox at room temperature and isolated in 62-95% yield. The complexes were characterized with (1)H, (13)C, and (19)F nuclear magnetic resonance spectroscopy, absorbance spectroscopy, high resolution mass spectrometry, elemental analysis, and single crystal X-ray crystallography. The complexes were shown to adopt distorted octahedral coordination geometry around zinc. The (1)H and (19)F NMR spectra of complexes 1-7 showed stable zinc coordination at 300 K while the effect of steric encumbrance and two trifluoromethyl groups in complex 8 was investigated with variable temperature NMR. The bis-ligated zinc complexes were effective initiators for the ring opening polymerization of L-lactide into poly-L-lactic acid (PLLA). With [L-lac]/[Zn complex] = 50, the bis-ligated zinc complexes yielded percentage conversion of 14-98% with polymerization times varying from 15-1440 min, where the longest reaction times were required when two trifluoromethyl groups were present. The addition of 4-fluorophenol co-catalyst resulted in up to a 5-fold increase in the percentage conversion in toluene solution and up to a 14-fold increase in bulk melt polymerization with reductions in the poly-dispersity index values for the isolated PLLA. Addition of 4-fluorophenol to complex 1 was studied with (1)H and (19)F NMR and appeared to yield an in situ generated zinc alkoxide complex.
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Affiliation(s)
- Kimberly A Gerling
- Department of Chemistry, Pepperdine University, 24255 Pacific Coast Highway, Malibu, CA 90263, USA.
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24
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Abstract
Flavonoids have attracted increased attention due to their broad bioactivities related to health and diseases. Modulating metal homeostasis may play an important role in their bioactivities. Recent studies have suggested that dietary flavonoids may affect zinc homeostasis, uptake, and transport. In this work, the zinc-binding sites on a few selected flavonoids have been investigated by (1)H NMR spectroscopy under physiological relevant pH and the species formed were verified by mass spectrometry. Zinc binding induces distinct changes in the proton resonances on the flavonoid rings, providing useful information to locate the Zn-binding sites. No Zn-binding was observed with flavone which lacks a chelation site. Zinc was found to bind to the 3-hydroxyl-4-keto, catechol, and 5-hydroxyl-4-keto chelation sites of flavonol, 3',4'-dihydroxylflavone and chrysin, respectively. Kaempferol and myricetin chelate zinc at the 3-hydroxyl-4-keto site while rutin binds zinc preferentially at the 5-hydroxyl-4-keto site. However, morin appears to bind zinc at the 1-ether-2-hydroxyl site.
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Affiliation(s)
- Yibin Wei
- Department of Chemistry and Biochemistry and UMass Cranberry Health Research Center, University of Massachusetts, Dartmouth, MA, 02747, USA
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25
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Boobalan MS, Amaladasan M, Tamilvendan D, Ramalingam S, Venkatesa Prabhu G. In Silico vibrational spectroscopic investigation on antioxidant active Mannich base 1-[anilino (phenyl) methyl] pyrrolidine-2,5-dione. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 131:303-318. [PMID: 24835933 DOI: 10.1016/j.saa.2014.04.135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/01/2014] [Accepted: 04/14/2014] [Indexed: 06/03/2023]
Abstract
The antioxidant active Mannich base 1-[anilino (phenyl) methyl] pyrrolidine-2,5-dione (APMPD) have been synthesized and its FT-IR and FT-Raman vibrational spectra were recorded within the region of 4000cm(-1), 50cm(-1) respectively. The molecular geometric parameters of APMPD have been computed using HF and DFT model theories. The energies of APMPD are calculated for all the eight possible conformers using B3LYP method at 6-311++G(d,p) basis set. From the computational results, the M1 conformer was identified as the most stable conformer of APMPD. The stable conformer was compared with experimental crystal geometry, which again fortifies the results of conformer analysis. The fundamental vibrations of the molecule are assigned according to the characteristic region and the literature report. The predicted highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy gap provide vivid idea on charge transfer behavior of APMPD. The molecular electrostatic potential (MEP) and Mulliken charge analysis indicate the feasible electrophilic and nucleophilic reactive sites on APMPD. The thermodynamic properties (heat capacity, entropy, and enthalpy) of the title compound at various temperatures are calculated in gas phase.
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Affiliation(s)
- Maria susai Boobalan
- Department of Chemistry, St. Joseph's College, Tiruchirapalli, Tamil Nadu, India; Department of Chemistry, Roever Engineering College, Perambalur, Tamil Nadu, India.
| | - M Amaladasan
- Department of Chemistry, St. Joseph's College, Tiruchirapalli, Tamil Nadu, India
| | - D Tamilvendan
- Department of Chemistry, National Institute of Technology, Tiruchirapalli, Tamil Nadu, India
| | - S Ramalingam
- Department of Physics, A.V.C. College, Mayiladuthurai, Tamil Nadu, India
| | - G Venkatesa Prabhu
- Department of Chemistry, National Institute of Technology, Tiruchirapalli, Tamil Nadu, India
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26
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Sanyal R, Dash SK, Das S, Chattopadhyay S, Roy S, Das D. Catecholase activity, DNA cleavage and cytotoxicity of six Zn(II) complexes synthesized from designed Mannich ligands: higher reactivity of mononuclear over dinuclear. J Biol Inorg Chem 2014; 19:1099-111. [DOI: 10.1007/s00775-014-1148-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 05/17/2014] [Indexed: 10/25/2022]
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27
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Chiang L, Savard D, Shimazaki Y, Thomas F, Storr T. FeIII Bipyrrolidine Phenoxide Complexes and Their Oxidized Analogues. Inorg Chem 2014; 53:5810-9. [DOI: 10.1021/ic500663x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Linus Chiang
- Department of Chemistry, Simon Fraser University , Burnaby, British Columbia V5A 1S6, Canada
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28
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Goswami S, Sengupta D, Paul ND, Mondal TK, Goswami S. Redox Non-Innocence of Coordinated 2-(Arylazo) Pyridines in Iridium Complexes: Characterization of Redox Series and an Insight into Voltage-Induced Current Characteristics. Chemistry 2014; 20:6103-11. [DOI: 10.1002/chem.201304369] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Indexed: 11/11/2022]
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29
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Stepanović S, Andjelković L, Zlatar M, Andjelković K, Gruden-Pavlović M, Swart M. Role of Spin State and Ligand Charge in Coordination Patterns in Complexes of 2,6-Diacetylpyridinebis(semioxamazide) with 3d-Block Metal Ions: A Density Functional Theory Study. Inorg Chem 2013; 52:13415-23. [DOI: 10.1021/ic401752n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | | | | | | | | | - Marcel Swart
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Facultat de Ciències, 17071 Girona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís
Companys 23, 08010 Barcelona, Spain
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30
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Dunn TJ, Chiang L, Ramogida CF, Hazin K, Webb MI, Katz MJ, Storr T. Class III Delocalization and Exciton Coupling in a Bimetallic Bis-ligand Radical Complex. Chemistry 2013; 19:9606-18. [DOI: 10.1002/chem.201300798] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Indexed: 11/07/2022]
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31
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Franks M, Gadzhieva A, Ghandhi L, Murrell D, Blake AJ, Davies ES, Lewis W, Moro F, McMaster J, Schröder M. Five Coordinate M(II)-Diphenolate [M = Zn(II), Ni(II), and Cu(II)] Schiff Base Complexes Exhibiting Metal- and Ligand-Based Redox Chemistry. Inorg Chem 2013; 52:660-70. [DOI: 10.1021/ic301731w] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Mark Franks
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | | | - Laura Ghandhi
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | - David Murrell
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | | | - E. Stephen Davies
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | - William Lewis
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | - Fabrizio Moro
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | - Jonathan McMaster
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
| | - Martin Schröder
- School of
Chemistry, University of Nottingham, Nottingham
NG7 2RD, U.K
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32
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Kochem A, Kanso H, Baptiste B, Arora H, Philouze C, Jarjayes O, Vezin H, Luneau D, Orio M, Thomas F. Ligand contributions to the electronic structures of the oxidized cobalt(II) salen complexes. Inorg Chem 2012; 51:10557-71. [PMID: 23013360 DOI: 10.1021/ic300763t] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Square planar cobalt(II) complexes of salen ligands N,N'-bis(3-tert-butyl-5R-salicylidene)-1,2-cyclohexanediamine), where R = OMe (1) and tert-butyl (2), were prepared. 1 and 2 were electrochemically reversibly oxidized into cations [1-H(2)O](+) and [2-H(2)O](+) in CH(2)Cl(2). The chemically generated [1-H(2)O](SbF(6))·0.68 H(2)O·0.82CH(2)Cl(2) and [2-H(2)O](SbF(6))·0.3H(2)O·0.85CH(2)Cl(2) were characterized by X-ray diffraction and NIR spectroscopy. Both complexes are paramagnetic species containing a square pyramidal cobalt ion coordinated at the apical position by an exogenous water molecule. They exhibit remarkable NIR bands at 1220 (7370 M(-1) cm(-1)) and 1060 nm (5560 M(-1) cm(-1)), respectively, assigned to a CT transition. DFT calculations and magnetic measurements confirm the paramagnetic (S = 1) ground spin state of the cations. They show that more than 70% of the total spin density in [1-H(2)O](+) and [2-H(2)O](+) is localized on the metal, the remaining spin density being distributed over the aromatic rings (30% phenoxyl character). In the presence of N-methylimidazole 1 and 2 are irreversibly oxidized by air into the genuine octahedral cobalt(III) bis(phenolate) complexes [1-im(2)](+) and [2-im(2)](+), the former being structurally characterized. Neither [1-im(2)](+) nor [2-im(2)](+) exhibits a NIR feature in its electronic spectrum. 1 and 2 were electrochemically two-electron oxidized into [1](2+) and [2](2+). The cations were identified as Co(III)-phenoxyl species by their characteristic absorption band at ca. 400 nm in the UV-vis spectrum. Coordination of the phenoxyl radical to the cobalt(III) metal ion is evidenced by the EPR signal centered at g = 2.00.
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Affiliation(s)
- Amélie Kochem
- Equipe de Chimie Inorganique Redox Biomimétique, Département de Chimie Moléculaire, Université Joseph Fourier, 38041 Grenoble Cedex 9, France
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33
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Chiang L, Kochem A, Jarjayes O, Dunn TJ, Vezin H, Sakaguchi M, Ogura T, Orio M, Shimazaki Y, Thomas F, Storr T. Radical Localization in a Series of Symmetric NiIIComplexes with Oxidized Salen Ligands. Chemistry 2012; 18:14117-27. [DOI: 10.1002/chem.201201410] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Indexed: 11/12/2022]
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34
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Clark KM, Bendix J, Heyduk AF, Ziller JW. Synthesis and Characterization of a Neutral Titanium Tris(iminosemiquinone) Complex Featuring Redox-Active Ligands. Inorg Chem 2012; 51:7457-9. [DOI: 10.1021/ic301059p] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kensha Marie Clark
- Department of Chemistry, University of California, Irvine, California
92697, United States
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitets
Parken 5, DK-2100 Copenhagen, Denmark
| | - Alan F. Heyduk
- Department of Chemistry, University of California, Irvine, California
92697, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California
92697, United States
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35
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Roberts CC, Barnett BR, Green DB, Fritsch JM. Synthesis and Structures of Tridentate Ketoiminate Zinc Complexes That Act As l-Lactide Ring-Opening Polymerization Catalysts. Organometallics 2012. [DOI: 10.1021/om200865w] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Courtney C. Roberts
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
| | - Brandon R. Barnett
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
| | - David B. Green
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
| | - Joseph M. Fritsch
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
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36
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Paul ND, Rana U, Goswami S, Mondal TK, Goswami S. Azo anion radical complex of rhodium as a molecular memory switching device: isolation, characterization, and evaluation of current-voltage characteristics. J Am Chem Soc 2012; 134:6520-3. [PMID: 22462473 DOI: 10.1021/ja212197s] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two rare examples of azo anion diradical complexes of Rh(III) are reported. These complexes showed excellent memory switching properties with a large ON/OFF ratio and are suitable for RAM/ROM applications. Their electronic structures have been elucidated using a host of physical methods, including X-ray crystallography, variable-temperature magnetic susceptibility measurement, cyclic voltammetry, electron paramagnetic resonance spectroscopy, and density functional theory. The results indicate a predominant triplet state description of the systems with two ferromagnetically coupled radicals.
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Affiliation(s)
- Nanda D Paul
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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37
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Ghosh K, Kumar P, Mohan V, Singh UP, Kasiri S, Mandal SS. Nuclease activity via self-activation and anticancer activity of a mononuclear copper(II) complex: novel role of the tertiary butyl group in the ligand frame. Inorg Chem 2012; 51:3343-5. [PMID: 22372979 PMCID: PMC3307853 DOI: 10.1021/ic2016676] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The copper complex [Cu((t)BuPhimp)(Cl)] (1) derived from tridentate ligand (t)BuPhimpH having N(2)O donors was synthesized, and its molecular structure was determined. A phenoxyl radical complex was generated in solution at room temperature using Ce(IV). The nuclease and anticancer activities of 1 were investigated. The roles of the tert-butyl group and singlet oxygen in the DNA cleavage activity were also discussed.
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Affiliation(s)
- Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
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38
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Dunn TJ, Chiang L, Ramogida CF, Webb MI, Savard D, Sakaguchi M, Ogura T, Shimazaki Y, Storr T. Non-innocent ligand behaviour of a bimetallic Cu complex employing a bridging catecholate. Dalton Trans 2012; 41:7905-14. [DOI: 10.1039/c2dt30444a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Liang L, Shih H, Chen H, Lin S. Synthesis and Structural Characterization of Zinc Complexes that Contain Chelating Phenolate Phosphane Ligands. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100952] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lan‐Chang Liang
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
| | - Huan‐Yu Shih
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
| | - Han‐Sheng Chen
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
| | - Sheng‐Ta Lin
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
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40
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Dunn TJ, Ramogida CF, Simmonds C, Paterson A, Wong EWY, Chiang L, Shimazaki Y, Storr T. Non-Innocent Ligand Behavior of a Bimetallic Ni Schiff-Base Complex Containing a Bridging Catecholate. Inorg Chem 2011; 50:6746-55. [DOI: 10.1021/ic200785g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tim J. Dunn
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
| | - Caterina F. Ramogida
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
| | - Curtis Simmonds
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
| | - Alisa Paterson
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
| | - Edwin W. Y. Wong
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
| | - Linus Chiang
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
| | - Yuichi Shimazaki
- College of Science, Ibaraki University, Bunkyo, Mito 310-8512, Japan
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A-1S6, Canada
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41
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42
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Kochem A, Orio M, Philouze C, Jamet H, du Moulinet d'Hardemare A, Thomas F. Radicals of Free and Zinc(II)‐Coordinated α‐Azophenols. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201001011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amélie Kochem
- Département de Chimie Moléculaire, Chimie InorganiqueRedox Biomimétique (CIRE), UMR‐5250, Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France, Fax: +33‐476 51 4836
| | - Maylis Orio
- Département de Chimie Moléculaire, Chimie Théorique, UMR‐5250, Université JosephFourier, BP 53, 38041 Grenoble Cedex 9, France
| | - Christian Philouze
- Département de Chimie Moléculaire, Chimie InorganiqueRedox Biomimétique (CIRE), UMR‐5250, Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France, Fax: +33‐476 51 4836
| | - Hélène Jamet
- Département de Chimie Moléculaire, Chimie Théorique, UMR‐5250, Université JosephFourier, BP 53, 38041 Grenoble Cedex 9, France
| | - Amaury du Moulinet d'Hardemare
- Département de Chimie Moléculaire, Chimie InorganiqueRedox Biomimétique (CIRE), UMR‐5250, Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France, Fax: +33‐476 51 4836
| | - Fabrice Thomas
- Département de Chimie Moléculaire, Chimie InorganiqueRedox Biomimétique (CIRE), UMR‐5250, Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France, Fax: +33‐476 51 4836
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43
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Micera G, Garribba E. Application of DFT Methods in the Study of VIVO2+-Peptide Interactions. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000382] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Ghosh K, Kumar P, Tyagi N, Singh UP. Novel Diphenoxo-Bridged Dinuclear Zinc Complexes: Generation of Phenoxyl-Radical Species and Nuclease Activity. Inorg Chem 2010; 49:7614-6. [DOI: 10.1021/ic1004837] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Pramod Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Nidhi Tyagi
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Udai P. Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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45
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Arora H, Philouze C, Jarjayes O, Thomas F. CoII, NiII, CuII and ZnII complexes of a bipyridine bis-phenol conjugate: Generation and properties of coordinated radical species. Dalton Trans 2010; 39:10088-98. [DOI: 10.1039/c0dt00342e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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