Infrared Spectrum of Diboron Tetrafluoride in the Gaseous and Solid States

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Abstract
Infrared spectra of B2F4 are reported over the range 2.5 to 50 μ at small grating resolution for both the gaseous and polycrystalline states. Examination of band envelopes for the gas and of differences between gas and solid spectra indicates that a structural difference exists between gaseous and solid B2F4. It is suggested that the alteration is analogous to that observed for B2Cl4 with the Vd or staggered configuration applying in gas and the Vh or planar configuration applying in the solid. Rough estimates are made for some of the principal potential constants.

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