Bis(-2-carboxymethyl-2-hydroxy-butane-dioato)bis-[diaqua-manganese(II)]-1, 2-bis-(pyridin-4-yl)ethane-water (1/1/2)

Abstract

The asymmetric unit of the title compound, [Mn2(C 6H6O7)2(H2O) 4]·C12H12N2· 2H2O, comprises half of a centrosymmetric dimer, half of a 1,2-bis-(pyridin-4-yl)ethane and one water mol-ecule. Two citrate ligands bridge two MnII ions, the MnII ion being coordinated by four O atoms from the citrate(2-) ligands and two water O atoms, forming a distorted octa-hedral environment. In the crystal, O-H⋯O hydrogen bonds link the centrosymmetric dimers and lattice water mol-ecules into a three-dimensional structure which is further stabilized by inter-molecular π-π inter-actions [centroid-centroid distance = 3.792 (2) Å].