Physico-Chemical Studies on Some Metal Complexes of Ce(IV), V(IV), Nb(V), Ta(V) and Mo(VI) with Substituted Thioquinazoles Having Thioamide Group

Abstract

Complexes of 2-mercapto-3-substituted quinazoline-4-one have been prepared and investigated using Ce(IV), V(V), Nb(V), Ta(V) and Mo(VI). These have the stoichiometries M(QTH)X₅ (M = Nb or Ta; X = Cl or NCS), [VO₂(PQTH)₃Cl], [V₂O₄(QTH)₄(NCS)₂], [Ce(PQTH)(H₂O)₅)(NO₃)₄ and [MoO₂(PQTH)₂Cl₂]·4H₂O (QTH= 2–mercaptoquinazoline-4-one and PQTH = 2-mercapto-3-phenylquinazoline-4-one). Structures of these complexes have been tentatively assigned on the basis of micro-analytical, conductivity, UV, visible, infrared and far-infrared spectral data. All the complexes have octahedral configuration.