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Published on: November 10, 2014
A combined experimental inelastic neutron scattering, Raman and ab initio lattice dynamics study of α-lithium
Kate R Ryan1, A J Ramirez-Cuesta, Keith Refson
1Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, UK.
Abstract:
A combination of inelastic neutron scattering (INS) spectroscopy and Raman spectroscopy with periodic density functional theory calculations is used to provide a complete assignment of the vibrational spectra of α-lithium amidoborane (α-LiNH(2)BH(3)). The Born charge density and the atomic motion up to the decomposition temperature have been modelled. These models not only explain the nature of bonding in α-LiNH(2)BH(3) but also provide an insight into the atomic mechanisms of its decomposition. The (INS) measurements were performed in the range of 0-4000 cm(-1) on the high-resolution time-of-flight TOSCA INS spectrometer at the ISIS Spallation Neutron Source at the Rutherford Appleton Laboratory.
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