The new coordination polymer formulated as [Zn(bim)2]@(H2O)1.67 (Hbim = benzimidazole, bim = benzimidazolate) has been synthesized and shown by single-crystal structural analysis to be a three-dimensional network with the 4264 sodalite topology, constructed by tetrahedral building blocks, [Zn(bim)4]2-. Each sodalite cage defined by the 24 zinc atoms at the apexes centers hosts 10 water molecules (ca. 18% occupancy).