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Etude Structurale du Tétrachloroaluminate de Sodium: Comparaison des Spectres de Diffusion Raman de la Famille des MAlCl 4 (M = Li, Na, K, Rb, Cs, NO, NH 4 ) à l'Etat Solide
Author(s) -
Wallart F.,
LorriauxRubbens A.,
Mairesse G.,
Barbier P.,
Wignacourt J. P.
Publication year - 1980
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250090113
Subject(s) - chemistry , raman spectroscopy , crystallography , crystallite , crystal structure , physics , optics
The crystal structure of NaAlCl 4 ( a = 10.322(3) Å, b = 9.886(3) Å, c = 6.167(2) Å, Z = 4, space group P 2 1 2 1 2 1 ) was refined to final R and R ω values of 0.025 and 0.039 respectively, for 1240 reflections with I >2σ( I ). The thermal motion of the AlCl 4 − anion is in keeping with the TLS rigid‐body analysis. Crystal and polycrystalline samples of this compound were studied by Raman scattering and an assignment of the observed bands was proposed. The Raman spectrum was compared with those of all members of alkaline (Li, Na, K, Rb, Cs) and pseudo‐alkaline (NH 4 + , NO + ) tetrachloroaluminates in the solid state.