title: Poly[[tri-μ-aqua-do-deca-aqua-tris-(μ3-1-hy-droxy-ethyl-idene-1,1-di-phospho-nato)tricalcium(II)tripalladium(II)] penta-hydrate].
abstract: The asymmetric unit of the title compound, {[CaPd{CH3OHC(PO3)2}(H2O)5]·5/3H2O} n , consists of one half of the complex [Pd{CH3OHC(PO3)2}](2-) anion (point group symmetry m..), one Ca(2+) cation [site symmetry (.2.)] that is surrounded by three water mol-ecules (one of which is on the same rotation axis) and by three disordered lattice water mol-ecules. The anions form a trinuclear metallocycle around a crystallographic threefold rotation axis. The cations are related by a twofold rotation axis to form a [Ca2(H2O)10](2+) dimer. The slightly distorted square-planar coordination environment of the Pd(II) atoms in the complex anions is formed by O atoms of the bidentate chelating phospho-nate groups of the 1-hy-droxy-ethyl-idene-1,1-di-phospho-nate ligands. In the crystal, cations are bound to anions through -Ca-O-P-O- bonds, as well as through O-H⋯O hydrogen bonds, resulting in a three-dimensional polymer. The structure is completed by five disordered solvent mol-ecules localized in cavities within the framework.
authors.affiliation: V.I. Vernadsky Institute of General and Inorganic Chemistry of Ukraine, National Academy of Sciences, Kiev-142, prospekt Akademika Palladina 32/34, Ukraine.
authors.forename: Irina P
authors.initials: IP
authors.lastname: Kutsenko
authors.affiliation: V.I. Vernadsky Institute of General and Inorganic Chemistry of Ukraine, National Academy of Sciences, Kiev-142, prospekt Akademika Palladina 32/34, Ukraine.
authors.forename: Alexandra N
authors.initials: AN
authors.lastname: Kozachkova
authors.affiliation: V.I. Vernadsky Institute of General and Inorganic Chemistry of Ukraine, National Academy of Sciences, Kiev-142, prospekt Akademika Palladina 32/34, Ukraine.
authors.forename: Natalia V
authors.initials: NV
authors.lastname: Tsaryk
authors.affiliation: V.I. Vernadsky Institute of General and Inorganic Chemistry of Ukraine, National Academy of Sciences, Kiev-142, prospekt Akademika Palladina 32/34, Ukraine.
authors.forename: Vasily I
authors.initials: VI
authors.lastname: Pekhnyo
authors.affiliation: Taras Shevchenko National University, Department of Inorganic Chemistry, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine.
authors.forename: Julia A
authors.initials: JA
authors.lastname: Rusanova
keywords: crystal structure