Tri-μ-sulfato-κ6O:O′-bis[aqua(1,10-phenanthroline-κ2N,N′)indium(III)] dihydrate

In the title dinuclear In-III compound, [In-2(SO4)(3)(C12H8N2)(2)(H2O)(2)]center dot 2H2O, each In-III cation is coordinated by a 1,10-phenanthroline (phen) ligand, a water molecule and three sulfate O atoms in a distorted InN2O4 octahedral geometry. Three sulfate anions bridge two In-III cations, forming the dinuclear entities. O-H center dot center dot center dot O and weak C-H center dot center dot center dot O hydrogen bonding is observed in the crystal structure. The crystal structure is further consolidated by pi-pi stacking between nearly parallel phen ring systems [dihedral angle = 4.2 (4)degrees], the centroid-centroid distance between benzene rings of adjacent phen ligands being 3.528 (9) angstrom.