Crystal structure of cis-bis­(μ-β-alanine-κ(2) O:O′)bis[tri­chlorido­rhenium(III)](Re–Re) sesquihydrate

The structure of the title compound, [Re(2)Cl(6)(C(3)H(7)NO(2))(2)]·1.5H(2)O, comprises a dinuclear complex cation [Re—Re = 2.2494 (3) Å] involving cis-oriented double carboxyl­ate bridges, four equatorial chloride ions and two weakly bonded chloride ligands in the axial positions at the two rhenium(III) atoms. In the crystal, two complex mol­ecules and two water mol­ecules constitute hydrogen-bonded dimers, while an extensive hydrogen-bonding network involving the groups of the zwitterionic ligand is important for generation of the framework. An additional partially occupied water molecule is disordered over two sets of sites about a symmetry centre with a site-occupancy ratio of 0.3:0.2.