Gas-phase structures and mass spectra of binary pentafluorides |
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| Authors: | WE Falconer GR Jones WA Sunder MJ Vasile Annabel A Muenter TR Dyke W Klemperer |
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| Institution: | Bell Laboratories, Murray Hill, 07974 U.S.A.;Department of Chemistry, Harvard University, Cambridge, Mass. U.S.A.;Department of Chemistry, Harvard University, Cambridge, Mass. and Bell Laboratories, Murray Hill, N.J. 07974 U.S.A. |
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| Abstract: | Most known non-radioactive pentafluorides have been examined by molecular-beam mass spectrometry and by the deflection of molecular beams in inhomogeneous electric fields. Extensive association of the vapors occurs for all but the lighter pentafluorides and the interhalogens. The interhalogen pentafluorides are strongly polar, consistent with the accepted C4v symmetry. The transition-metal and Group V pentafluorides are all non-polar, except VF5 and CrF5 for which temperature-dependent polarity is observed. However, uncertainty exists as to whether these observations are applicable to monomeric pentafluorides in all cases. Mass-spectral cracking patterns are presented for all species. |
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