Vanadium Tetrachloride Vibrational Spectrum

VCl4 Revisited: ESR and Photolysis in Solid Hydrogen, Neon, and Argon; Formation of VH4

“…An electron diffraction study 3 has found the V−Cl bond distance to be 2.14 Å, and several, not entirely conclusive, infrared and Raman measurements have been made. , The frequency most relevant to this research is ν 2 (the e bending) estimated 3 to be 97 ± 9 cm -1 .…”

“…The VCl 4 molecule has been experimentally − and theoretically − studied for more than 30 years with no definite conclusion as to the degree of vibronic coupling occurring in the ground state. Tetrahedral ligand field theory splits the 2 D term of the d 1 configuration into the orbitally degenerate 2 E lower state and 2 T upper state, separated by about 1 eV.…”

Infrared Spectrometry

“…Sulfur trioxide monomer wras studied by two groups (58,363) and the three infrared active modes were assigned. The expected Jahn-Teller distortion effects in the vibrational spectra of vanadium tetrachloride could not be detected (145,230) but such effects were observed in some hexafluorides (569). The new compounds of xenon w'ith fluorine were studied spectroscopically with the conclusions that XeF< has a planar (Dih) structure (112) and that XeF2 is linear (8,515).…”

Jahn–Teller Effect in VCl4

“…The vanadium tetrachloride molecule has one unpaired electron and is a liquid at room temperature with enough vapor pressure to make it a candidate for gas-phase experiments bearing on the Jahn–Teller (JT) effect (JTE), but many experiments were done in the liquid and in solution as well. The electronic absorption spectrum, − vibrational spectrum, − photoelectron spectrum (PES), − magnetic deflection spectrum, electron paramagnetic resonance (EPR) spectrum, − nuclear magnetic resonance spectrum, electric deflection, electric dipole moment, electron diffraction, − and magnetic susceptibility ,,,, have all been studied, sometimes with respect to the JTE, sometimes not.…”