Hydrogen Bonding in M(OD)2 Compounds Under Pressure.

Abstract

The structures of the deuterated hydroxides (M (OD) 2; M=Mg, Ca, Mn, Ni, Co) have been refined using the Rietveld method and neutron powder diffraction data collected at high pressure. There is no statistically significant increase in the O-D interatomic distance at increased pressure while the hydrogen bonding interaction D. . . O increases as this distance decreases and the O-D. . . O angle increases. The intramolecular O-D bond valences, determined indirectly from the intermolecular D. . . O distances, decrease steadily for all materials as pressure is increased.