Electronic spectrum of the manganate(V) ion in different host lattices
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 77 (9) , 1563-1578
- https://doi.org/10.1039/f29817701563
Abstract
A comparative account is given of the 4.2 K linearly polarised absorption spectra of Sr5(PO4)3 Cl and Ca2PO4Cl crystals containing MnO3– 4, with emphasis on the differing site-group perturbations. With the inclusion of a previously undetected shoulder at 11 500 cm–1 in the Ca2PO4Cl case, it is possible to account for the energies and polarisations of all the bands using similar values of Δ and B(respectively 11 000–11 500 and 500–550 cm–1) but different parameters describing the tetragonal and trigonal site perturbations. It is confirmed that all bands in the visible are of ligand-field type and that the lowest charge-transfer band is at 32 000–33 000 cm–1.Keywords
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