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Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

Spectroscopic studies of some novel CuI and CuII complexes derived from the tribochemistry reactions of Kbr, KI and CaI2 with CuII-Girard's T complex [Cu(GT)Cl2(H2O)2(EtOH)]Cl.H2O.


PMID 11075674

Abstract

Novel CuI and CuII complexes derived from the tribochemistry reactions of [Cu(GT)Cl2(H2O)2(EtOH)Cl.H2O with KBr, KI and CaI2 have been isolated and characterized. The reactions of KI and CaI2 with [Cu(GT)Cl2(H2O)2(EtOH)]Cl.H2O in the solid state are accompanied by colour change, reduction of CuII to CuI and substitution of the chloride by iodide ions. Also, the tribochemistry reaction of KBr with the CuII-GT complex is accompanied by change in colour, substitution of chloride by bromide ions but no reduction has been occurred. All the isolated solid complexes have been characterised by spectral (UV-vis, IR, 1H-NMR), magnetic and thermal measurements. The effect of the variation of the ratio between alkali and/or alkaline earth metal halides (KI, KBr, and CaI2) and the CuII-GT complex has also been investigated.

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