Crystal structure of poly[di-μ-aqua-{5-[(1Z)-2-(4-chlorophenyl)-1-cyanoethenyl]-1,2,3,4-tetrazol-1-ido-κN1}sodium]

In the title compound, [Na(C10H5ClN5)(H2O)2]n, infinite chains of [Na(H2O)2]+ cations having a diamond-shaped cross-section and running parallel to the b axis are formed. O—H...N hydrogen bonds to the anions generate layers parallel to (100) which have the chlorobenzenecyanoethenyl substituents protruding from both surfaces. The sodium ion makes a short contact of 2.4801 (13) Å with the N atom of the tetrazolide ring which is syn to the cyano N atom