Email zadetek: Poly[[μ(4)-naphthalene-1,4-dicarboxyl­ato-κ(4) O:O′:O′′:O′′′-μ(2)-naphthalene-1,4-dicarboxyl­ato-κ(4) O,O′:O′′,O′′′-bis­(2-phenyl-1H-1,3,7,8-tetra­azacyclopenta­[l]phenanthrene-κ(2) N (7),N (8))dimanganese(II)] N,N-dimethyl­formamide solvate]