A STUDY OF SELECTED IONS IN THE MASS SPECTRA OF BENZENETHIOL AND DEUTERATED BENZENETHIOL

Journal Article · Sat Feb 01 04:00:00 EST 1964 · Journal of Physical Chemistry (U.S.)

DOI:https://doi.org/10.1021/j100784a014· OSTI ID:4105124

Earnshaw, D G; Cook, G L; Dinneen, G U

Partial mass spectra are presented for benzenethiol, C/sub 6/H/sub 5/SH, and deuterated benzenethiol, C/sub 6/H/sub 5/SD. The changes in ion intensities that result from deuterium labeling were studied to determine the structure of the parent ion before fragmentation. A seven-membered ring structure for the parent ion is proposed as precursor for some of the ions studied, whereas the six- membered ring structure for the parent is proposed as precursor for the other ions. Appearance potentials were obtained for several product ions from deuterated benzenethiol, C/sub 6/H/sub 5/SD, and were used to determine heats of formation of the ions and establish processes by which they are formed. The parent ion is the only intermediate between the molecule, C/sub 6/H/sub 5/SD, and the product ions at m/e = 34, 45, 46, 67, 77, 84, 85, and 109. A proposed process for the formation of each of the ions is discussed. When ring cleavage of the parent ion takes place, ring closure in one of the fragments also takes place. (auth)

• Research Organization: Bureau of Mines, Laramie, Wyo.
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-012014
• OSTI ID: 4105124
• Journal Information: Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 68; ISSN JPCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BENZENE
CHEMISTRY
DEUTERIUM COMPOUNDS
FORMATION HEAT
MASS SPECTROMETERS
ORGANIC SULFUR COMPOUNDS
PHENYL RADICALS
THERMODYNAMICS