Reflection spectra of (alkali metal, thallium (I), silver (I)) iridium (IV) hexachlorides
- 1 May 1961
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 4 (3) , 235-239
- https://doi.org/10.1080/00268976100100351
Abstract
While the effect of rubidium and caesium ions in solid salts of IrCl6 -- is a shift to lower wave-numbers, comparable to that occurring in organic solvents relative to water, the dark blue silver (I) and thallium (I) salts have a new, broad band in the red. Mixed crystals of Cs2IrCl6 and Tl2IrCl6 are prepared, and the absorption spectra are discussed in terms of a tendency to ‘ferroelectric rattling’ and strong covalent bonding of Ag and Tl. Analogous cases are pointed out in solid salts of other 5d-hexahalides.Keywords
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