catena-Poly[[[bis-(μ-4-hydroxy-benzoato)bis-[(4-hydroxy-benzoato)manganese(II)]]-di-μ-4,4'-bipyridine] 4,4'-bipyridine disolvate tetra-hydrate].

In the polymeric title complex, {[Mn(O(2)CC(6)H(4)-p-OH)(2)(C(10)H(8)N(2))]·C(10)H(8)N(2)·2H(2)O}(n), the Mn(II) atom is coordinated in a distorted octa-hedral geometry defined by four O atoms from three different carboxyl-ate ligands and two trans-N atoms from two 4,4'-bipyridine ligands. In the crystal structure, an extensive range of O-H⋯O and O-H⋯N hydrogen bonds link the complex and all non-coordinated mol-ecules into a three-dimensional network.