Poly[diaqua­([mu]-4,4'-bipyridine)tetra­kis­([mu]-ferro­cenecarboxyl­ato)bis­(ferro­cenecarboxyl­ato)­tri­man­ganese(II)]

The title compound, [Mn₃Fe₆(C₅H₅)₆(C₆H₄O₂)₆(C₁₀H₈N₂)(H₂O)₂]_n, consists of two crystallographically unique Mn^II centers. One is situated on an inversion center and is octa­hedrally coordinated by two N atoms from two bridging 4,4'-bipyridine (4,4'-bipy) ligands and four O atoms, two from different bridging ferrocenecarboxyl­ate ([mu]₂-FcCOO^-; Fc is ferrocene) units and two from aqua ligands. The two halves of each 4,4'-bipy ligand are related by a center of symmetry. The second Mn^II center is in a strongly distorted tetra­gonal-pyramidal geometry, coordinated by five O atoms, three from three [mu]₂-FcCOO^- units and two from a fourth, chelating, [eta]²-FcCOO^- unit. The FcCOO^- units function as bridging ligands to adjacent Mn^II centers, leading to the formation of linear ...Mn1Mn2Mn2Mn1... chains. Adjacent chains are further bridged by 4,4'-bipy ligands, resulting in a two-dimensional layered polymer.