Racemic calcium tartrate tetrahydrate [form (II)] in rat urinary stones

Dominique Bazin , Armel Le Bail (1) , Michel Daudon (2) , Amandine Brochot (1) , Vincent Maisonneuve (1)

1 LdOF - Laboratoire des oxydes et fluorures
2 CRISTAL - Centre de Recherches et d'Informations Scientifiques et Techniques Appliquées aux Lithiases

The title compound, [Ca(C4H4O6)]4H2O, calcium tartrate tetrahydrate, is a new triclinic centrosymmetric form identified in rat kidney calculus. The crystal structure was determined from powder and single-crystal X-ray diffraction. The four water molecules belong to one square face of the Ca-atom coordination (a square antiprism), the four O atoms of the second square face coming from two tartrate anions, building infinite chains alternating Ca atom polyhedra and tartrate anions along a, with the chains cross-linked by a network of hydrogen bonds.

Domaines: Urologie et Néphrologie

Dominique Bazin, Armel Le Bail, Michel Daudon, Amandine Brochot, Vincent Maisonneuve. Racemic calcium tartrate tetrahydrate [form (II)] in rat urinary stones. Acta crystallographica Section B: Structural crystallography and crystal chemistry, 2009, B65, pp.350-354. ⟨10.1107/S0108768109013688⟩. ⟨hal-00430291⟩