title: Racemic calcium tartrate tetrahydrate [form (II)] in rat urinary stones.
abstract: 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.
authors.affiliation: Laboratoire des Oxydes et Fluorures, UMR 6010 CNRS, Faculté des Sciences et Techniques, Université du Maine, Avenue Olivier Messiaen, 72085 Le Mans CEDEX 9, France. armel.le_bail@univ-lemans.fr
authors.forename: A
authors.initials: A
authors.lastname: Le Bail
authors.forename: D
authors.initials: D
authors.lastname: Bazin
authors.forename: M
authors.initials: M
authors.lastname: Daudon
authors.forename: A
authors.initials: A
authors.lastname: Brochot
authors.forename: V
authors.initials: V
authors.lastname: Robbez-Masson
authors.forename: V
authors.initials: V
authors.lastname: Maisonneuve
mesh_terms: D000818:Animals; D003460:Crystallization; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007536:Isomerism; D008297:Male; D008855:Microscopy, Electron, Scanning; D008958:Models, Molecular; D008968:Molecular Conformation; D051381:Rats; D017208:Rats, Wistar; D013644:Tartrates / Q000737:chemistry*; D014545:Urinary Calculi / Q000737:chemistry* / Q000648:ultrastructure
chemical_list: D013644:Tartrates; C029768:tartaric acid