X-ray crystal structure,EPR and electrochemical studies of two novel cyanonitrosylrhenates:K_2[Re(NO)(CN)_5](centre dot)(Phen)_6(centre dot)4.5H_2O and K[Re(NO)(H_2O)(CN)_4](centre dot)(Phen)_5(centre dot)CH_3OH(centre dot)3H_2O

摘要

The reaction of an aqueous solution containing KReO_4,KCN,KOH and NH_2OH(centre dot)HC1 with Phen(1,10-phenanthroline)produced a light orange product which on crystallization from water or methanol afforded K_2[Re(NO)(CN)_5](centre dot)(Phen)_6(centre dot)4.5H_2O(1)and K[Re(NO)(H_2O)(CN)_4](centre dot)(Phen)_5(centre dot)CH_3OH(centre dot)3H_2O(2).In both complexes the metal oxidation state was confirmed by the EPR spectroscopy and the redox behavior was studied by cyclic voltammetry and differential pulse voltammetry.