Catena-Poly[[[diaquacadmium(II)]-di-μ-thiocyanato] bis(2-amino-4,6-dimethylpyrimidine)

Abstract

The title complex, {[Cd(NCS)2(H2O)2]·2C6H9N3}n, crystalizes in the triclinic space group P\overline 1. The asymmetric unit contains one 2-amino-4,6-di­methyl­pyrimidine mol­ecule, a thio­cyanate ion, a water mol­ecule and a cadmium ion (site symmetry \overline 1). The cadmium ions are symmetrically doubly bridged by thio­cyanate ions, leading to a polymeric chain motif. The octahedral coordination geometry of cadmium is completed by a pair of inversion-related water mol­ecules. The 2-amino­pyrimidine mol­ecules are not coordinated to cadmium but are hydrogen-bonded to the coordinated water mol­ecules and thio­cyanate ions. There is also a pyrimidine–pyrimidine interaction via an N—H⋯N hydrogen bond.