Effects of antiferromagnetic coupling in the 5 k electronic spectra of crystals of vanadium dichloride, dibromide, and di-iodide
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 15,p. 1634-1638
- https://doi.org/10.1039/dt9720001634
Abstract
Single-crystal absorption spectra at 300, 80, and 5 K of the antiferromagnetic compounds VCl2, VBr2, and VI2 are reported between 5000 and 30,000 cm–1. The energy positions and intensities of the bands are similar to those for isolated V2+ but spin-forbidden levels are more intense. This intensity effect and some sharp, fine structure are explained in terms of magnetic exchange effects. A combination band due to two spin-allowed single-centre transitions is detected.Keywords
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