INVESTIGADORES
FREIRE ESPELETA Eleonora
artículos
Título:
Zoledronate complexes. I.Poly[[µ2-aqua[µ3-1 hydroxy-2-(1H,3H-imidazol-3-ium-1-yl)ethylidenediphosphonato]potassium(I)] monohydrate].
Autor/es:
ELEONORA FREIRE; DANIEL VEGA; RICARDO BAGGIO
Revista:
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Año: 2009 vol. 66 p. 13 - 16
ISSN:
0108-2701
Resumen:
The title compound, {[K(C5H9N2O7P2)(H2O)]H2O}n, is polymericand consists of layers parallel to (001) interconnected byhydrogen-bonding and interactions. The K+ cation iseightfold coordinated in a KO8 environment by O atoms fromthree different chelating zoledronate units and two coordinatedwater molecules. The zoledronate group presents itsusual zwitterionic character, with negative charges in thesingly protonated phosphonate groups and a positive charge atthe protonated imidazole N atom. The anion binds to threedifferent K+ cations in a (so far unreported) triply chelatingmanner. Intra- and interplanar interactions are enhanced by avariety of hydrogen bonds involving all available OH andNH donors. A strong imidazolephosphonate CH Ointeraction is present in the structure.
