catena-Poly[[[diaqua-cobalt(II)]bis-(μ-1,3-di-4-pyridylpropane-κN:N')] bis-(perchlorate) bis-(1,3-di-4-pyridyl-propane) bis-(2-methyl-4-nitro-aniline)].

In the title compound, {[Co(C(13)H(14)N(2))(2)(H(2)O)(2)](ClO(4))(2)·2C(13)H(14)N(2)·2C(7)H(8)N(2)O(2)}(n), the Co(II) ion lies on a crystallographic inversion center and is coordinated by four N atoms from four symmetry-related 1,3-di-4-pyridylpropane ligands and two O atoms from two water ligands in a slightly distorted octa-hedral coordination environment. The 1,3-di-4-pyridylpropane ligands are doubly bridging and connect the Co(II) ions into one-dimensional chains. The asymmetric unit also contains one uncoordinated 1,3-di-4-pyridylpropane mol-ecule, one 2-methyl-4-nitro-aniline mol-ecule and one perchlorate anion. In the crystal structure, inter-molecular O-H⋯N hydrogen bonds connect the one-dimensional chains into a two-dimensional network.