Crystal structure of tetra-kis-[μ-3-carboxy-1-(1,2,4-triazol-4-yl)adamantane-κ2 N 1: N 2]tetra-fluoridodi-μ2-oxido-dioxidodisilver(I)divanadium(V) tetra-hydrate

Abstract

The crystal structure of the title mol-ecular complex, [Ag₂{VO₂F₂}₂(C₁₃H₁₇N₃O₂)₄]·4H₂O, supported by the heterofunctional ligand tr-ad-COOH [1-(1,2,4-triazol-4-yl)-3-carb-oxy-adamantane] is reported. Four 1,2,4-triazole groups of the ligand link two Ag^I atoms, as well as Ag^I and V^V centres, forming the heterobimetallic coordination cluster {Ag^I ₂(V^VO₂F₂)₂(tr)₄}. V^V exists as a vanadium oxofluoride anion and possesses a distorted trigonal-bipyramidal coordination environment [VO₂F₂N]. A carb-oxy-lic acid functional group of the ligand stays in a neutral form and is involved in hydrogen bonding with solvent water mol-ecules and VO₂F₂ ^- ions of adjacent mol-ecules. The extended hydrogen-bonding network is responsible for the crystal packing in the structure.

Keywords: 1,2,4-triazole; crystal structure; heterobimetallic complex; hydrogen bonding; silver(I); vanadium(V) oxofluoride.