Matrix-isolation infrared and ultraviolet–visible studies on some transition-metal pentachlorides and pentabromides
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- Vol. 23 (12) , 3387-3392
- https://doi.org/10.1039/dt9910003387
Abstract
Samples of the solids NbCl5, NbBr5, TaCl5, TaBr5, ReCl5, ReBr5 and OsCl5 have been vaporised in vacuo, and the products characterised by mass spectrometry and IR and UV/VIS spectroscopy in low-temperature argon and nitrogen matrices. In particular it is shown that vaporisation of the d0 species leads to the production of simple monomers, which adopt a square-pyramidal shape in nitrogen and a variety of conformers in argon. Rhenium pentachloride vaporises as a monomer which exhibits D3h symmetry in both argon and nitrogen, but ReBr5 and OsCl5 decompose, the former to yield molecular Re3Br9.Keywords
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