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IJC-A Vol.50A(03-04) [March-April 2011] >

Title: Bidentate coordination behaviour of a potentially tridentate ligand. A mononuclear four-coordinate Ni(II) complex supported by two o-iminobenzosemiquinonato units
Authors: Mukherjee, Atasi
Mukherjee, Rabindranath
Keywords: Bioinorganic chemistry
Metal coordinated radicals
Non-innocent ligands
Crystal structures
Issue Date: Mar-2011
Publisher: NISCAIR-CSIR, India
Abstract: Using a new N,O,S–potentially tridentate ligand (H2L), a mononuclear NiII complex of composition  (1) has been synthesized. The structure of the complex has been elucidated in the solution state using 1H NMR spectroscopy and in the solid state by X-ray crystallography. X-ray studies reveal that the NiII is surrounded by two o-iminobenzosemiquinonate(1–) -radical ligands, providing a NiIIN2O2 square planar coordination environment. Notably, the thioether unit in each ligand remains non-coordinated. Cyclic voltammetric measurements of (1) show two one-electron reductive and two one-electron oxidative redox responses, which are ligand-centred in origin. Characterization of electrochemically-generated reduced and oxidized species has also been accomplished.
Page(s): 484-490
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.50A(03-04) [March-April 2011]

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