Vapour density and vibrational spectra of MoOF4 and WOF4. The structure of crystalline WOF4
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 1,p. 81-84
- https://doi.org/10.1039/dt9740000081
Abstract
Vapour density measurements on MoOF4 show this compound to be monomeric in the gas phase. Similar measurements on WOF4 show it to be essentially monomeric as a gas, although some association may occur at lower temperatures and higher pressures. Gas-phase Raman spectra of WOF4 are invariant in the range 200–600° and closely similar to those of the melt and solid. The results demonstrate that solid WOF4 is not principally an oxygen-bridged polymer. The spectra of MoOF4 are closely similar to those of WOF4 in all phases. Detailed studies of the gas-phase and matrix-isolated vibrational spectra of WOF4, including structure of gas phase i.r. bands and Raman depolarization data, strongly suggest that the molecule is a square pyramid with an apical oxygen.Keywords
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