Acta Cryst. (2013). E69, m288-m289 [ doi:10.1107/S160053681301088X ]
Abstract: The asymmetric unit of the title compound, [Pd4(C5H9NO2S)4]·9.75H2O, contains two neutral tetranuclear complex molecules with similar conformations and 19.5 solvent water molecules. Of the 21 independent water molecules, three exhibit an occupancy of one-half. In each tetranuclear complex molecule, the four PdII atoms have a square-planar coordination environment and are spanned by four D-penicillaminate ligands in a 4N,S:S,O coordination mode, forming an eight-membered Pd4S4 metallacycle. In the crystal, two tetranuclear molecules are connected to each other through eight N-HO hydrogen bonds between amine and carboxylate groups, constructing a cylindrical dimer. The dimers are further hydrogen-bonded with the solvent water molecules, completing a three-dimensional network.
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