title: Diguanidinium hydrogenarsenate monohydrate and its deuterated analogue vibrational, DSC and X-ray investigations.
abstract: The crystal structure of diguanidinium hydrogenarsenate monohydrate has been found to belong to the P42(1)/c space group of the tetragonal system, with Z = 8, a = 17.114(2) A, c = 7.3500(10) A. In this complex, a network of hydrogen bonds links water molecules and hydrogenarsenate ions. The hydrogenarsenate ions form hydrogen-bonded chains along the crystallographic c-axis. Detailed vibrational studies have been carried out (FTIR and FT-Raman on powder samples, polarized FTIR microscope on a small single crystal at room temperature). The vibrational spectra are discussed in relation to the crystal structure. Calorimetric (DSC) studies have been performed, but no phase transition was found in the temperature range 100-350 K.
authors.affiliation: Institute of Low Temperature and Structure Research of the Polish Academy of Sciences, Okólna 2 str., 50-422 Wrocław, Poland. drozd@int.pan.wroc.pl
authors.forename: M
authors.initials: M
authors.lastname: Drozd
authors.forename: J
authors.initials: J
authors.lastname: Baran
authors.forename: A
authors.initials: A
authors.lastname: Pietraszko
mesh_terms: D001149:Arsenates / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D018360:Crystallography, X-Ray; D003903:Deuterium / Q000737:chemistry*; D019791:Guanidine / Q000737:chemistry*; D006860:Hydrogen Bonding; D007477:Ions / Q000737:chemistry; D008968:Molecular Conformation; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014732:Vibration
chemical_list: D001149:Arsenates; D007477:Ions; D003903:Deuterium; D019791:Guanidine