catena-poly[[aqua(3,4,7,8-tetramethyl-1,10-phenanthroline-kappa2N,N')cadmium(II)]-mu3-thiosulfato-kappa3S:S:O].

The title compound, [Cd(S(2)O(3))(C(16)H(16)N(2))(H(2)O)](n), presents a polymeric one-dimensional structure running along the P2(1)/c glide direction, with elementary units defined by six-coordinate Cd(II) atoms bonded to three symmetry-related thiosulfate groups, a bidentate tetramethylphenanthroline ligand and one aqua ligand. The bridging thiosulfates bind metal centers through two different sequences, viz. Cd-S-Cd' and Cd'-S'-S'-O'-Cd, defining a closed six-membered ring. Individual chains are held together via pi-pi interactions to generate two-dimensional networks parallel to the (100) plane. These, in turn, are connected by much weaker van der Waals interactions.