UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Distance limits of OH Y hydrogen bonds (Y=Cl, Br, I) in solid hydroxides. Structure refinement of laurionite-type Ba(OD)I, Sr(OD)I and Sr(OH)I by neutron and synchrotron x-ray powder diffraction

Peter, S; Cockcroft, JK; Roisnel, T; Lutz, HD; (1996) Distance limits of OH Y hydrogen bonds (Y=Cl, Br, I) in solid hydroxides. Structure refinement of laurionite-type Ba(OD)I, Sr(OD)I and Sr(OH)I by neutron and synchrotron x-ray powder diffraction. ACTA CRYSTALLOGR B , 52 423 - 427.

Full text not available from this repository.

Abstract

Synchrotron X-ray and neutron powder diffraction experiments on Sr(OH)I, Sr(OD)I and Ba(OD)I have been performed at ambient temperature. The structure data obtained by Rietveld refinement confirm the laurionite-type structure {Pnma, Z = 4; R(l) = 5.9, 7.9 and 7.8%; a = 7.7294(1), b = 4.24697(7) and c = 10.7374 (1) Angstrom [Sr(OH)I]; a = 7.7303 (8), b = 4.2465 (4) and c = 10.7399 (10) Angstrom [Sr(OD)I]; a = 8.0291(9), b = 4.4961(5) and c = 11.0196(16) Angstrom [Ba(OH)I]; a = 8.0203(13), b = 4.4912(7) and c = 11.0193(14) Angstrom [Ba(OD)I]} proposed from IR and Raman spectra. In contrast to the respective lead compound, only very weak hydrogen bonds are formed. The strength of the hydrogen bonds of OH- ions in condensed material is discussed with respect to intermolecular H ... Y distances, furcation of the bonds and M-O bond lengths (synergetic effect). The longest H ... Y distances (Y = Cl, Br, I), for which hydrogen bonds due to OH- have been established, are 2.80, 2.90 and 3.25 Angstrom, respectively.

Type:Article
Title:Distance limits of OH Y hydrogen bonds (Y=Cl, Br, I) in solid hydroxides. Structure refinement of laurionite-type Ba(OD)I, Sr(OD)I and Sr(OH)I by neutron and synchrotron x-ray powder diffraction
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

Archive Staff Only: edit this record