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Vibrational Study of Lithium Insertion and Bondings in IntercalatedLi 3 HfS 3 andLi 1.5 NiPS 3 Semiconducting Phases
Author(s) -
Sourisseau C.,
Mathey Y.,
Kerrache I.,
Julien C.
Publication year - 1996
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/(sici)1097-4555(199603)27:3/4<303::aid-jrs961>3.0.co;2-9
Subject(s) - raman spectroscopy , octahedron , intercalation (chemistry) , lithium (medication) , chemistry , infrared , crystallography , alkali metal , ion , metal , transition metal , molecular vibration , tetrahedron , local symmetry , spectral line , inorganic chemistry , crystal structure , physics , optics , medicine , biochemistry , organic chemistry , quantum mechanics , astronomy , endocrinology , catalysis
Infrared transmission spectra (600–50 cm −1 ) and Raman spectra (800–10 cm −1 ) of the layered semiconducting transition metal sulphides HfS 3 and NiPS 3 and of their intercalates Li x HfS 3 , Na x HfS 3 (0< x&45ROM9; 3) and Li x NiPS 3 (0< x&45ROM9; 1.5) are compared. In agreement with previous studies, it is concluded that alkali metal ions are accom‐modated in both tetrahedral and octahedral sulphur environments in the former case and only in octahedral surroundings in the latter. The wavenumbers of the characteristic intercalation modes are discussed and compared with literature data; simple local symmetry arguments can then explain the very weak Raman intensity of the modes in Li x NiPS 3 compounds.