ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.71, 2015 (ESCI)
In the title compound, [Na(C10H5ClN5)(H2O)(2)], infinite chains of [Na(H2O)(2)](+) cations having a diamond -shaped cross-section and running parallel to the b axis are formed. O-H center dot center dot center dot 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) angstrom with the N atom of the tetrazolide ring which is syn to the cyano N atom.