The title Cd-II complex, [Cd(S2O3)(C10H8N2)], consists of polymeric ch
ains running along the monoclinic symmetry axis. The elementary units
are defined by pentacoordinated Cd-II atoms bonded to three different
thiosulfate groups and a bidentate bipyridine ligand. The bridging thi
osulfates bind metal centres through two different sequences, Cd1-S1-C
d1' and Cd1-O1'-S2'-S1'-Cd1', thus defining a six-membered ring. Indiv
idual chains are held together solely via van der Waals interactions.