title: A low temperature infrared study of the coordinated water in calcium malonate dihydrate.
abstract: The infrared spectra of calcium malonate dihydrate in the polycrystalline state, both normal and with different degrees of deuteration, were obtained at low temperatures in order to obtain information about the crystalline environment of the hydration water molecules. The study showed that both water molecules are non-equivalent and non-symmetric. That result is indicative of a non-symmetric space group for the crystal, in agreement with one out of three different crystallographic studies made on the substance.
authors.affiliation: Area de Química General e Inorgánica Dr. Gabino F. Puelles, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Argentina.
authors.forename: E V
authors.initials: EV
authors.lastname: Brusau
authors.forename: G E
authors.initials: GE
authors.lastname: Narda
authors.forename: J C
authors.initials: JC
authors.lastname: Pedregosa
authors.forename: E L
authors.initials: EL
authors.lastname: Varetti
mesh_terms: D002118:Calcium / Q000737:chemistry; D003461:Crystallography; D017666:Deuterium Oxide; D008314:Malonates / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013816:Thermodynamics; D014867:Water / Q000737:chemistry
chemical_list: D008314:Malonates; D014867:Water; D017666:Deuterium Oxide; D002118:Calcium