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Raman, FTIR, photoacoustic-infrared, and inelastic neutron scattering spectra of ternary metal hydride salts A2MH5, (A = Ca, Sr, Eu; M = Ir, Rh) and their deuterides
Authors:Barsan Mirela M  Butler Ian S  Gilson Denis F R  Moyer Ralph O  Zhou Wei  Wu Hui  Udovic Terrence J
Institution:Department of Chemistry, McGill University, 801 Sherbrooke Street, West. Montreal, QC H3A 2K6, Canada.
Abstract:The vibrational spectra of the ternary metal hydride (deuteride) salts, A(2)MH(5) and A(2)MD(5), where A = calcium, strontium and europium and M = iridium(I) and rhodium(I), have been assigned using Raman, Fourier transform infrared, photoacoustic infrared, and inelastic neutron scattering spectroscopies and density functional theory (DFT) calculations. The wavenumbers of the infrared-active stretching vibrations depend upon the ionization energies of the central metal atom and the cation. The phase transition in calcium pentahydridoiridate(I) was studied as a function of temperature and pressure.
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