The crystal structure of a spherical vanadium complex encapsulating a nitrate anion

The crystal structure of a nitrate anion caged in spherical vanadium and oxygen structure surrounded by sodium hydroxy and water solvent molecules, systematic name poly[[heptadecaaquatetradecaoxidononasodium][pentacosaaquanitratoundecaoxidopentadecavanadium]], H 61 NNa 9 O 71 V 15 is reported. The complex crystallizes in the non-centrosymmetric Cc space group and exhibits many inter- and intramolecular hydrogen-bonding interactions. The complex contains V IV and V V centres, which are six-coordinate or octahedrally coordinated. The sodium atoms in this structure sit outside of the sphere with varying geometries and coordination numbers ranging from 5–8. The interactions between the sodium hydroxy sheet and spherical vanadium contributes to the packing of the molecules within the structure.