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Wurrey, C. J.

Publications and source records attributed to Wurrey, C. J..

4 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1978

An infrared and Raman study of 1,2-dimethyldiphosphine

The Raman spectra of 1,2-dimethyldiphosphine have been recorded in the liquid and solid phases to 4000 per cm. The infrared spectrum of the solid phase was also recorded from 4000 to 200 per cm. The spectra were consistent with the presence of both the trans and gauche meso conformers and presumably the gauche conformer of the d,l isomer in the liquid phase. The gauche meso conformer was absent from the solid phase. A tentative vibrational assignment is proposed for the molecule.

Bard, J. R.↗
NASA NTRS1975

Raman spectra of gases. XVI - Torsional transitions in ethanol and ethanethiol

The Raman spectra of gaseous ethanol and ethanethiol have been investigated. Thiol torsional fundamentals for the gauche conformer of EtSH and EtSD have been observed and the asymmetric potential function for this vibration has been calculated. Methyl torsional transitions and overtones have also been observed for both of these molecules. Barriers to internal rotation for the methyl top are calculated to be 3.77 and 3.84 kcal/mol for the EtSH and EtSD compounds, respectively. Hydroxyl torsional fundamentals were observed at 207 and 170 per cm in the EtOH and EtOD spectra, respectively. Overtones of the methyl torsion in both molecules yield a barrier to internal rotation of 3.62 kcal/mol for the gauche conformer.

Durig, J. R.↗
NASA NTRS1975

Vibrational spectra and structure of biphosphine and biphosphine-d4

Infrared and Raman spectra have been obtained for biphosphine and biphosphine-d4 in both solid and vapor phases. From the spectral data, it is concluded that only one conformer exists in both solid and fluid phases and that this is the gauche conformer. A normal-coordinate analysis has also been performed, in which the 24 vibrational frequencies of the two isotopes have been fitted by 10 force constants to an overall average error of 1.0%. The PED indicates that there is practically no mixing of the normal modes in the P2H4 molecule but the P-P stretch and the PD2 wagging modes are extensively mixed for the P2D4 molecule.

Odom, J. D.↗