Bis(tetra-n-butylammonium) bis[(mandelato)oxo(peroxo)vanadate(V)] mandelicacid solvate

The crystal structure of the title complex, bis(tetra-n-butyl-ammonium) bis (mu-alpha-hydroxybenzeneacetato)-1 kappa(2)O(1),O-2:-2 kappa O-2:1 kappa O- 2:2 kappa(2)O(1),O-2-bis[oxo(peroxo)vanadium(V)] alpha-hydroxybenzeneacetic acid solvate, (C16H36N)(2)[V2O2(O-2)(2)(C8K6O3)(2)]. C8H8O3, consists Of d imeric anions with twofold rotation symmetry, cations and molecules of mand elic acid. Deprotonated hydroxyl O atoms of the mandelate dianion ligands b ridge the V atoms to give a non-planar V2O2 ring. Each V atom has distorted pentagonal pyramidal coordination geometry, with an oxo ligand in the axia l position. The mandelic acid molecule is disordered and coordinates weakly to the second axial site of each V atom through a carboxylate O atom.