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Hexahalogenoniobates(V), Oxopentahalogenoniobates(V) and their electronic spectra
Author(s) -
Furlani C.,
Zinato E.
Publication year - 1967
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19673510311
Subject(s) - spectral line , niobium , chromophore , acetonitrile , materials science , chemistry , analytical chemistry (journal) , physics , photochemistry , astronomy , chromatography , metallurgy
Abstract The preparation of some new hexachloroniobates(V), hexabromoniobates(V), oxopentachloro‐ and oxopentabromoniobates(V) from niobium(V) pentahalides and oniumhalides are reported. Detailed spectral data are presented for the above species in acetonitrile. The observed spectral transitions are due in all observed cases to π → t 2g transitions; minor details of intensity, contour shapes and small maximum shifts allow to distinguish individually between NbX 6 − , NbX 6 and NbOX 5 chromophores. The possible origin of the observed splitting of the π → t 2g bands are briefly discussed.