Poly[(μ(3)-5-tert-butyl­benzene-1,3-di­carboxyl­ato)di­pyridine­cobalt(II)]

In the title compound, [Co(C(12)H(12)O(4))(C(5)H(5)N)(2)](n), the Co(II) cation is coordinated by four O atoms from three 5-tert-butyl­benzene-1,3-di­carboxyl­ate anions and two N atoms from pyridine mol­ecules in a distorted octa­hedral geometry. One carboxyl­ate group of the anionic ligand chelates a Co(II) cation while another carboxyl­ate group bridges two Co(II) cations, resulting in a polymeric layer parallel to (101). Weak C—H⋯O hydrogen bonds occur between adjacent polymeric layers. In the crystal, one of pyridine mol­ecules is equally disordered over two positions.