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Raman Study of Mono‐, Di‐, and Trimethyl Ammonium Hexachlorostannates
Author(s) -
Ghozlen M. H. Ben,
Mlik Y.,
Daoud A.
Publication year - 1984
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221250108
Subject(s) - raman spectroscopy , octahedron , chemistry , octahedral symmetry , ammonium , crystallography , molecular vibration , symmetry (geometry) , spectral line , crystal structure , physics , ion , geometry , organic chemistry , mathematics , optics , astronomy
The low‐frequency Raman spectra (0 to 350 cm −1 ) of (CH 3 NH 3 ) 2 SnCl 6 : 1 MHS, [(CH 3 ) 2 NH 2 ] 2 · SnCl 6 : 2 MHS and [(CH 3 ) 3 NH] 2 SnCl 6 : 3 MHS are recorded on single crystals at room temperature. The spectra are assigned on the basis of group theory analysis of vibrations and in view of the previously reported structural data of these hexachlorostannate compounds. The effect of site symmetry on the internal vibrations of the SnCl 6 2−octahedra are discussed; the distortions of the SnCl 6 2−octahedra are taken into account in the expressions of the Raman tensors relative to their internal modes.