Matrix isolation and mass spectrometric studies on the vaporisation of chromium(III) chloride. The characterisation of molecular CrCl4 and CrCl3
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 4,p. 859-865
- https://doi.org/10.1039/dt9870000859
Abstract
Mass spectrometric and matrix isolation i.r. studies on the vaporisation of solid chromium(III) chloride over the temperature range 550–800 °C reveal three different molecular chromium halides. At the lowest temperatures, CrCl4 is identified as the most volatile species and its tetrahedral structure confirmed by isotope patterns. At ca. 600°C, a new molecular species, CrCl3, appears and its structure is similarly shown to be planar (D3h). Further heating to ca. 780°C results in the formation of molecular CrCl2. The results are discussed in the light of previous studies on transition metal halid systems.Keywords
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