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Acta Crystallogr E Crystallogr Commun. 2015 Jan 1;71(Pt 1):45-7. doi: 10.1107/S2056989014026620. eCollection 2015 Jan 1.

Crystal structure of cis-bis-(μ-β-alanine-κ(2) O:O')bis[tri-chlorido-rhenium(III)](Re-Re) sesquihydrate.

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Department of Inorganic Chemistry, Ukrainian State University of Chemical Technology, Gagarin Ave. 8, Dnipropetrovsk 49005, Ukraine.
Department of Inorganic Chemistry, National Taras Shevchenko University of Kyiv, Volodimirska Str. 64, Kyiv 01033, Ukraine.


The structure of the title compound, [Re2Cl6(C3H7NO2)2]·1.5H2O, comprises a dinuclear complex cation [Re-Re = 2.2494 (3) Å] involving cis-oriented double carboxyl-ate 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 mol-ecules and two water mol-ecules 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.


cluster; crystal structure; quadruple metal–metal bond; rhenium; zwitterionic ammonia­carboxyl­ato complex; β-alanine

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