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Comparative study of lithium and sodium hexahydrido- and hexadeuteridoaluminates; Raman and infrared spectra of Li sub 3 AlH sub 6 , Na sub 3 AlH sub 6 , and Li sub 3 AlD sub 6

Journal Article · · Materials Research Bulletin; (USA)
; ; ;  [1]
  1. Laboratoire de Thermochimie Minerale associe au C.N.R.S. n 116, Institut National des Sciences Appliquees de Lyon, 20, avenue Albert Einstein, F - 69621 Villeurbanne Cedex (FR)
Raman and infrared spectra of Lithium and Sodium hexahydrido- and hexadeuteridoaluminates Li/sub 3/AlH/sub 6/, Na/sub 3/AlH/sub 6/ and Li/sub 3/AlD/sub 6/ have been investigated in order to study metal-hydrogen interactions. A vibrational analysis has been performed. Several force field models (Urey-Bradley, Orbital Valence force field, Shimanouchi, Murrell) have been used in order to compute the force constants of Al-H bonds. No significative difference is observed between the results obtained from the various models, and the environment of aluminum is thus well determined. AlH/sub 6//sup 3-/ ions form an almost perfect octahedron in Li/sub 3/AlH/sub 6/ and a distorted one in Na/sub 3/AlH/sub 6/.
OSTI ID:
5175298
Journal Information:
Materials Research Bulletin; (USA), Journal Name: Materials Research Bulletin; (USA) Vol. 24:1; ISSN MRBUA; ISSN 0025-5408
Country of Publication:
United States
Language:
English