Aqua[N,N '-ethylenebis(salicylideneaminato-N,O)]-oxovanadium(V) nitrate 0.76-hydrate

In the title compound, [VO(C16H16N2O2)(H2O)]NO3.0.76H(2)O, the V atom has a distorted octahedral coordination geometry with a long V-O(water) bond, 2. 225 (1) Angstrom, trans to V=O, 1.594 (1) Angstrom. The V atom is 0.260 Ang strom out of the plane defined by the N and O atoms of the bis(salicylidene )ethylenediaminate ligand and is displaced towards the vanadyl O atom. The coordinated water molecule is hydrogen bonded to one O atom of the nitrate ion so that pairs of cations are linked by two O-H . . .O . . .H-O bridges to give neutral centrosymmetric dimers. This is a different bridging arrang ement from that found in either of the polymorphs of the anhydrous compound . There is also a weak hydrogen bond between a nitrate O and the partially occupied water of crystallization.