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Bhunia P, Gomila RM, Frontera A, Ghosh A. Combined effects of the lewis acidity and electric field of proximal redox innocent metal ions on the redox potential of vanadyl Schiff base complexes: an experimental and theoretical study. Dalton Trans 2023; 52:3097-3110. [PMID: 36786744 DOI: 10.1039/d3dt00024a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The reactivity of biological or synthetic metalloenzymes is modulated in the presence of redox innocent Lewis acidic metal ions as they change the redox potential of the redox active metal ions present in the active site of metalloenzymes. To study this effect, we synthesised a mono-nuclear V(IV) complex (VOL, 1) with an N2O4 donor bicompartmental ligand, characterized it by single-crystal X-ray crystallography and recorded its cyclic voltammogram in acetonitrile. The CV revealed a reversible redox process for the V(IV)/V(V) couple. The potential of the V(IV)/V(V) couple shifted to a more positive value when equivalent amounts of Li+, Na+, K+, Mg2+, Ca2+ and Ba2+ ions were added separately to its acetonitrile solution, but the extent of shift for Li+ and Mg2+ was much less than that of the other metal ions. The guest metal ions except Li+ and Mg2+ were accommodated in the outer compartment of VOL as confirmed by IR and UV-Vis spectral analysis. Single-crystal structural analysis of [(VOL)KPF6]2, (1·K) and [(VOL)Ba(ClO4)2(H2O)]n, (1·Ba) also confirmed the hetero-metallic adduct formation. The correlation of the shift of the V(IV/V) redox potential with the Lewis acidity of respective metal ions deviated appreciably from linearity. DFT calculations suggest that the shift in potential is probably controlled by local electric fields induced by those ions, as indicated by 2D vector electric field maps.
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Affiliation(s)
- Pradip Bhunia
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India.
| | - Rosa M Gomila
- Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain.
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain.
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India. .,Rani Rashmoni Green University, Tarakeswar, Hooghly 712410, West Bengal, India
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Theoretical insight on the importance of CH···O and NH···O interactions in the crystal packing of a decavanadate synthesized from a simple V(IV) precursor. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Shit M, Maity S, Bera S, Weyhermüller T, Ghosh P. Coordination of o-benzosemiquinonate, o-iminobenzosemiquinonate, 4,4′-di-tert-butyl-2,2′-bipyridine and 1,10-phenanthroline anion radicals to oxidovanadium(iv). NEW J CHEM 2016. [DOI: 10.1039/c6nj02220k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Coordination of semiquinonate and heterocyclic α-diimine anion radicals to oxidovanadium(iv) is authenticated.
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Affiliation(s)
- Madhusudan Shit
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
| | - Suvendu Maity
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
| | - Sachinath Bera
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
| | | | - Prasanta Ghosh
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
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4
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Organic-functionalized, substituted polyoxovanadium and vanadoniobates: Synthesis, structure and application. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.08.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zabierowski P, Radoń M, Szklarzewicz J, Nitek W. Mixed-valence VIV/VV tetrametallate core {V4N2O14} cluster containing tris(hydroxymethyl)aminomethane and acetylacetone. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2013.12.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Nishio M, Inami S, Hayashi Y. Early‐Lanthanide Complexes with All‐Inorganic Macrocyclic Polyoxovanadate Ligands. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201435] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Masaki Nishio
- Department of Chemistry, Graduate School of Natural Science and Technology, Kakuma, Kanazawa 920‐1192, Japan, Fax: +81‐76‐264‐5742, http://chem.s.kanazawa‐u.ac.jp/e/
| | - Shinnosuke Inami
- Department of Chemistry, Graduate School of Natural Science and Technology, Kakuma, Kanazawa 920‐1192, Japan, Fax: +81‐76‐264‐5742, http://chem.s.kanazawa‐u.ac.jp/e/
| | - Yoshihito Hayashi
- Department of Chemistry, Graduate School of Natural Science and Technology, Kakuma, Kanazawa 920‐1192, Japan, Fax: +81‐76‐264‐5742, http://chem.s.kanazawa‐u.ac.jp/e/
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Kundu S, Maity S, Maity AN, Ke SC, Ghosh P. Stabilization of oxidovanadium(iv) by organic radicals. Dalton Trans 2013; 42:4586-601. [DOI: 10.1039/c2dt32693k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sutradhar M, Kirillova MV, Guedes da Silva MFC, Martins LMDRS, Pombeiro AJL. A Hexanuclear Mixed-Valence Oxovanadium(IV,V) Complex as a Highly Efficient Alkane Oxidation Catalyst. Inorg Chem 2012; 51:11229-31. [DOI: 10.1021/ic3017062] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manas Sutradhar
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida
Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Marina V. Kirillova
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida
Rovisco Pais, 1049-001 Lisboa, Portugal
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida
Rovisco Pais, 1049-001 Lisboa, Portugal
- Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024
Lisboa, Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida
Rovisco Pais, 1049-001 Lisboa, Portugal
- Área Departamental
de Engenharia Química, ISEL, R. Conselheiro Emídio Navarro, 1959-007 Lisboa, Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida
Rovisco Pais, 1049-001 Lisboa, Portugal
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Vigato P, Peruzzo V, Tamburini S. Acyclic and cyclic compartmental ligands: Recent results and perspectives. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.01.009] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Iovkova-Berends L, Berends T, Zöller T, Bradtmöller G, Herres-Pawlis S, Jurkschat K. Tin(II) and Tin(IV) Compounds with Scorpion-Shaped Ligands - Intramolecular N→Sn vs. Intermolecular O→Sn Coordination. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200145] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Scheurer A, Gieb K, Alam MS, Heinemann FW, Saalfrank RW, Kroener W, Petukhov K, Stocker M, Müller P. Synthesis, magnetic properties, and STM spectroscopy of an unprecedented octanuclear chloro-bridged nickel(ii) double cubane. Dalton Trans 2012; 41:3553-61. [DOI: 10.1039/c2dt12007k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Weyhermüller T, Wagner R, Biswas B, Chaudhuri P. A non-linear (2,2,2) alkoxo-bridging in a FeIII4O6 core potentially relevant to iron-tunicates. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.01.107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Roy AS, Saha P, Adhikary ND, Ghosh P. o-Iminobenzosemiquinonate and o-imino-p-methylbenzosemiquinonate anion radicals coupled VO2+ stabilization. Inorg Chem 2011; 50:2488-500. [PMID: 21348449 DOI: 10.1021/ic102296p] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The diamagnetic VO(2+)-iminobenzosemiquinonate anion radical (L(R)(IS)(•-), R = H, Me) complexes, (L(-))(VO(2+))(L(R)(IS)(•-)): (L(1)(-))(VO(2+))(L(H)(IS)(•-))•3/2MeOH (1•3/2MeOH), (L(2)(-))(VO(2+))(L(H)(IS)(•-)) (2), and (L(2)(-))(VO(2+))(L(Me)(IS)(•-))•1/2 L(Me)(AP) (3•1/2 L(Me)(AP)), incorporating tridentate monoanionic NNO-donor ligands {L = L(1)(-) or L(2)(-), L(1)H = (2-[(phenylpyridin-2-yl-methylene)amino]phenol; L(2)H = 1-(2-pyridylazo)-2-naphthol; L(H)(IS)(•-) = o-iminobenzosemiquinonate anion radical; L(Me)(IS)(•-) = o-imino-p-methylbenzosemiquinonate anion radical; and L(Me)(AP) = o-amino-p-methylphenol} have been isolated and characterized by elemental analyses, IR, mass, NMR, and UV-vis spectra, including the single-crystal X-ray structure determinations of 1•3/2MeOH and 3•1/2 L(Me)(AP). Complexes 1•3/2MeOH, 2, and 3•1/2 L(Me)(AP) absorb strongly in the visible region because of intraligand (IL) and ligand-to-metal charge transfers (LMCT). 1•3/2MeOH is luminescent (λ(ext), 333 nm; λ(em), 522, 553 nm) in frozen dichloromethane-toluene glass at 77 K due to π(diimine→)π(diimine)* transition. The V-O(phenolato) (cis to the V═O) lengths, 1.940(2) and 1.984(2) Å, respectively, in 1•3/2MeOH and 3•1/2 L(Me)(AP) are consistent with the VO(2+) description. The V-O(iminosemiquinonate) (trans to the V═O) lengths, 2.1324(19) in 1•3/2MeOH and 2.083(2) Å in 3•1/2 L(Me)(AP), are expectedly ∼0.20 Å longer due to the trans influence of the V═O bond. Because of the stronger affinity of the paramagnetic VO(2+) ion to the L(H)(IS)(•-) or L(Me)(IS)(•-), the V-N(iminosemiquinonate) lengths, 1.908(2) and 1.921(2) Å, respectively, in 1•3/2MeOH and 3•1/2 L(Me)(AP), are unexpectedly shorter. Density functional theory (DFT) calculations using B3LYP, B3PW91, and PBE1PBE functionals on 1 and 2 have established that the closed shell singlet (CSS) solutions (VO(3+)-amidophenolato (L(R)(AP)(2-)) coordination) of these complexes are unstable with respect to triplet perturbations. But BS (1,1) M(s) = 0 (VO(2+)-iminobenzosemiquinonate anion radical (L(R)(IS)(•-)) coordination) solutions of these species are stable and reproduce the experimental bond parameters well. Spin density distributions of one electron oxidized cations are consistent with the [(L(-))(VO(2+))(L(R)(IQ))](+) descriptions [VO(2+)-o-iminobenzoquinone (L(R)(IQ)) coordination], and one electron reduced anions are consistent with the [(L(•2-))(VO(3+))(L(R)(AP)(2-))](-) descriptions [VO(3+)-amidophenolato (L(R)(AP)(2-)) coordination], incorporating the diimine anion radical (L(1)(•2-)) or azo anion radical (L(2)(3-)). Although, cations and anions are not isolable, but electro-and spectro-electrochemical experiments have shown that 3(+) and 3(-) ions are more stable than 1(+), 2(+) and 1(-), 2(-) ions. In all cases, the reductions occur with simultaneous two electron transfer, may be due to formation of coupled diimine/azo anion radical-VO(2+) species as in [(L(•2-))(VO(2+))(L(R)(AP)(2-))](2-).
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Affiliation(s)
- Amit Saha Roy
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata-103, India
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Henkelis JJ, Jones LF, de Miranda MP, Kilner CA, Halcrow MA. Two Heptacopper(II) Disk Complexes with a [Cu7(μ3-OH)4(μ-OR)2]8+ Core. Inorg Chem 2010; 49:11127-32. [DOI: 10.1021/ic1020093] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James J. Henkelis
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Leigh F. Jones
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
- School of Chemistry, NUI Galway, University Road, Galway, Ireland
| | | | - Colin A. Kilner
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Malcolm A. Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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Abbas G, Lan Y, Kostakis GE, Wernsdorfer W, Anson CE, Powell AK. Series of Isostructural Planar Lanthanide Complexes [LnIII4(μ3-OH)2(mdeaH)2(piv)8] with Single Molecule Magnet Behavior for the Dy4 Analogue. Inorg Chem 2010; 49:8067-72. [DOI: 10.1021/ic1011605] [Citation(s) in RCA: 208] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ghulam Abbas
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesser Strasse 15, D-76131, Karlsruhe, Germany
| | - Yanhua Lan
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesser Strasse 15, D-76131, Karlsruhe, Germany
| | - George E. Kostakis
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, D-76021, Karlsruhe, Germany
| | - Wolfgang Wernsdorfer
- Institut Néel, CNRS & University J. Fourier, BP 166, 38042, Grenoble, Cedex 9, France
| | - Christopher E. Anson
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesser Strasse 15, D-76131, Karlsruhe, Germany
| | - Annie K. Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesser Strasse 15, D-76131, Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, D-76021, Karlsruhe, Germany
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Scheurer A, Ako A, Saalfrank R, Heinemann F, Hampel F, Petukhov K, Gieb K, Stocker M, Müller P. Synthesis, Magnetic Properties, and STM Spectroscopy of Cobalt(II) Cubanes [CoII4(Cl)4(HL)4]. Chemistry 2010; 16:4784-92. [DOI: 10.1002/chem.200902578] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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