catena-Poly[[bis­[[bis­(3-amino­prop­yl)amine-κ3 N,N′,N′′](thio­cyanato-κN)cadmium]-μ4-sulfato-κ4 O,O:O′,O′] methanol hemisolvate]

The asymmetric unit of the title compound, {[Cd(2)(NCS)(2)(SO(4))(C(6)H(17)N(3))(2)]·0.5CH(3)OH}(n), consists of two Cd(2+) cations, two thio-cyanate and one sulfate anion, two bis-(3-amino-prop-yl)amine co-ligands and one methanol molecule with half-occupancy. Each Cd(2+) cation is coordinated by four N atoms of one terminal N-bonded thio-cyanate anion and one bis-(3-amino-prop-yl)amine co-ligand, and by two O atoms of two symmetry-related sulfate anions, defining a slightly distorted octa-hedral coordination polyhedron. Each two Cd(2+) cations are connected into dimers, which are located on centres of inversion and which are further μ-1,1:3,3-bridged via the sulfate anions into polymeric zigzag chains along the a axis.