Coherent anti-stokes Raman spectroscopy studies of vapour phase niobium pentachloride

The coherent anti-stokes Raman spectroscopy (CARS) technique was used for the first time to determine vibrational spectra of high temperature niobium pentachloride (NbCl5). Vapour phase CARS spectra of NbCl5 were obtained from the sample at temperatures 578 K, 623 K and 673 K for υ1 mode and 573 K for υ2 mode, respectively. The vibrational frequencies measured were 394 cm−1 for υ1 mode and 312 cm−1 for υ2 mode, respectively.