Crystal structure of tetra-kis-(μ-4-benzyl-4 H-1,2,4-triazole-κ2 N 1: N 2)tetra-fluoridodi-μ2-oxido-dioxidodisilver(I)divanadium(V)

Abstract

The crystal structure of the title compound, [Ag₂(VO₂F₂)₂(C₉H₉N₃)₄], is presented. The mol-ecular complex is based on the heterobimetallic Ag^I-V^V fragment {Ag^I ₂(V^VO₂F₂)₂(tr)₄} supported by four 1,2,4-triazole ligands [4-benzyl-(4H-1,2,4-triazol-4-yl)]. The triazole functional group demonstrates homo- and heterometallic connectivity (Ag-Ag and Ag-V) of the metal centers through the [-NN-] double and single bridges, respectively. The vanadium atom possesses a distorted trigonal-bipyramidal coordination environment [VO₂F₂N] with the Reedijk structural parameter τ = 0.59. In the crystal, C-H⋯O and C-H⋯F hydrogen bonds as well as C-H⋯π contacts are observed involving the organic ligands and the vanadium oxofluoride anions. A Hirshfeld surface analysis of the hydrogen-bonding inter-actions is also described.

Keywords: 1,2,4-triazole; Hirshfeld surface analysis; crystal structure; silver(I); vanadium(V) oxofluoride.