Poly[[{μ(2)-5-[(di-methyl-amino)(thioxo)meth-oxy]benzene-1,3-di-carboxyl-ato-κ(4) O (1),O (1'):O (3),O (3')}(μ(2-)4,4'-di-pyridyl-amine-κ(2) N (4):N (4'))cobalt(II)] di-methyl-formamide hemisolvate monohydrate]

In the crystal structure of the title compound, {[Co(C(11)H(9)NSO(5))(C(10)H(9)N(3))]0.5C(3)H(7)NO·H(2)O} (n) or {[Co(dmtb)(dpa)]·0.5DMF·H(2)O} (n) (dmtb(2-) = 5-[(di-meth-yl-amino)-thioxometh-oxy]-1,3-benzene-dicarboxyl-ate and dpa = 4,4'-di-pyridyl-amine), an assembly of periodic [Co(C(11)H(9)NSO(5))(C(10)H(9)N(3))] (n) layers extending parallel to the bc plane is present. Each layer is constituted by distorted [CoO(4)N(2)] octa-hedra, which are connected through the μ (2)-coordination modes of both dmtb(2-) and dpa ligands. Occupationally disordered water and di-meth-yl-formamide (DMF) solvent mol-ecules are located in the voids of the network to which they are connected through hydrogen-bonding inter-actions.