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.