Date Published: July 01, 2012
Publisher: International Union of Crystallography
Author(s): Roel Decadt, Pascal Van Der Voort, Isabel Van Driessche, Rik Van Deun, Kristof Van Hecke.
The structure of the title compound, tetraaquatris(nitrato-κ2O,O′)praseodymium(III) dihydrate, was redetermined. The structure models derived from the previous determinations [Rumanova et al. (1964 ▶). Kristallografiya, 9, 642–654; Fuller & Jacobson (1976 ▶). Cryst. Struct. Commun.5, 349–352] were confirmed, but now with all H atoms unambiguously located, revealing a complex O—H⋯O hydrogen-bonding network, extending throughout the whole structure. In the title compound, the coordination environment of the PrIII atom can best be described as a distorted bicapped square antiprism defined by three bidentate nitrate anions and four water molecules. Additionally, two lattice water molecules are observed in the crystal packing. The title compound is isotypic with several other lanthanide-containing nitrate analogues.
For general background and the synthesis of the title compound, see: Liu et al. (2012 ▶). For the original determined structures, see: Fuller & Jacobson (1976 ▶); Rumanova et al. (1964 ▶). For analogous Ln-containing structures (Ln = lanthanide), see: Kawashima et al. (2000 ▶); Rogers et al. (1983 ▶); Shi & Wang (1990 ▶, 1991 ▶); Stumpf & Bolte (2001 ▶). For related structures of metal-organic compounds, see: Rohde & Urland (2006 ▶); Weakley (1982 ▶, 1984 ▶, 1989 ▶). For databases of (in)organic structures, see: Allen (2002 ▶); Bergerhoff et al. (1983 ▶); ICSD (2009 ▶).