Affiliation:
1. Department of Chemistry, Faculty of Science, Hiroshima University, N aka-ku, Hiroshima 730, Japan
Abstract
81Br NQR was studied in AlBr3 · 2C5H5N, AlBr3 · 1.5CH3CN, and AlBr3 · 2CH3CN. From the NQR spectra it is apparent that the solid compounds are build up by ion pairs [AlBr2(C5H5N )4
+, AlBr4
-], [Al(CH3CN)6
3+, 3AlBr4
-], and [AlBr(CH3CN)5
2+, 2AlBr4
-- CH3CN], respectively. 27Al NQR detected by SEDOR technique supports these structural models. Using these NQR parameters, the metal-ligands interactions in the six-coordinated complexes is discussed on the basis of the donor strength. In the case of AlBr3 ·2CH3CN two types of reorientational motion of the AlBr4
- tetrahedra were detected from the spin lattice relaxation times and from fade-out phenomena of the 81Br NQR signals.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics
Cited by
12 articles.
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