Stabilization of tetrameric metavanadate ion by tris(1,10-phenanthroline)cobalt(III): synthesis, spectroscopic, and X-ray structural study of [Co(phen)₃]₃(V₄O₁₂)₂Cl · 27H₂O

Abstract

A new complex salt of composition [Co(phen)3]3(V4O12)2Cl·27H2O (phen = 1,10-phenanthroline and [V4O12]4- = tetrameric dodecaoxotetravanadate ion) was synthesized by reacting appropriate salts in aqueous medium. The complex salt has been characterized by elemental analyses, thermogravimetric analysis (TGA), cyclic voltammetry (CV), FT-IR and UV/Vis spectroscopies, solubility product and conductance measurements. Single crystal X-ray structure determination revealed ionic structure consisting of three complex cations, [Co(phen)3]3+, two [V4O12]4- anions, one chloride and twenty seven lattice waters. Detailed structural and spectroscopic analyses of [Co(phen)3]3(V4O12)2Cl·27H2O show that the large anion is stabilized by the large cationic metal complex as there is preferred shape compatibility that leads to a large number of lattice stabilizing non-covalent interactions.

Synthesis, Crystal Structure, and Computational Methods of Vanadium and Copper Compounds as Potential Drugs for Cancer Treatment

“…A peak at 972 cm −1 is attributed to NH vibrations outside the plane. Bands between 580 and 418 cm −1 correspond to C-N-C [ 41 , 42 ], and Cu-N and Cu-O stretching vibrations.…”