Trigonal planar copper(I) complex: synthesis, structure, and spectra of a redox pair of novel copper(II/I) complexes of tridentate bis(benzimidazol-2'-yl) ligand framework as models for electron-transfer copper proteins

Inorganic Chemistry
R BalamuruganR Srinivasa Gopalan

Abstract

The copper(II) and copper(I) complexes of the chelating ligands 2,6-bis(benzimidazol-2'-ylthiomethyl)pyridine (bbtmp) and N,N-bis(benzimidazol-2'-ylthioethyl)methylamine (bbtma) have been isolated and characterized by electronic and EPR spectra. The molecular structures of a redox pair of Cu(II/I) complexes, viz., [Cu(bbtmp)(NO(3))]NO(3), 1, and [Cu(bbtmp)]NO(3), 2, and of [Cu(bbtmp)Cl], 3, have been determined by single-crystal X-ray crystallography. The cation of the green complex [Cu(bbtmp)(NO(3))]NO(3) possesses an almost perfectly square planar coordination geometry in which the corners are occupied by the pyridine and two benzimidazole nitrogen atoms of the bbtmp ligand and an oxygen atom of the nitrate ion. The light-yellow complex [Cu(bbtmp)]NO(3) contains copper(I) with trigonal planar coordination geometry constituted by the pyridine and two benzimidazole nitrogen atoms of the bbtmp ligand. In the yellow chloride complex [Cu(bbtmp)Cl] the asymmetric unit consists of two complex molecules that are crystallographically independent. The coordination geometry of copper(I) in these molecules, in contrast to the nitrate, is tetrahedral, with pyridine and two benzimidazole nitrogen atoms of bbtmp ligand and the chloride ion ...Continue Reading

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Citations

Aug 25, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Martin M KimaniJulia L Brumaghim
Sep 17, 2013·Angewandte Chemie·Florian KlossChristian Hertweck
Jun 29, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Sandra Y de BoerJarl Ivar van der Vlugt
Jul 28, 2019·The FEBS Journal·María-Eugenia LlasesAlejandro J Vila
Jun 28, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Ivan CastilloEbbe Nordlander
May 17, 2012·Acta Crystallographica. Section E, Structure Reports Online·Daniel VolzStefan Bräse
Mar 3, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Martin M KimaniJulia L Brumaghim
Apr 25, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Chandrasekaran RajarajeswariMohamad Abdulkadhar Akbarsha
Jun 3, 2021·Inorganic Chemistry·Stefan HenflingHarald Krautscheid
Jun 3, 2021·Proceedings of the National Academy of Sciences of the United States of America·Anastasia C ManesisAmy C Rosenzweig
Aug 27, 2021·Journal of Biomolecular Structure & Dynamics·Mohamed M IbrahimAbd El-Motaleb M Ramadan

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