ELECTRON DIFFRACTION STUDY OF MONOMETHYL- AND DIMETHYLPHOSPHINE

Journal Article · Tue Mar 01 04:00:00 EST 1960 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1730805· OSTI ID:4145678

Bartell, L S

The structural parameters of gaseous monomethyl- and dimethylphosphine were determined by the sectormicrophotometer method of electron diffraction. The center of gravity bond distances and standard errors for the two molecules were, respectively: r/sub CP/ = 1.858 plus or minus 0.003 and 1.853 plus or minus 0.003 A; r/sub CH?= 1.094 plus or minus 0.008 and 1.097 plus or minus 0.007 A; and r/sub PH = 1.423 plus or minus 0.007 and 1.445 plus or minus 0.02 A. The angles P--C-- H were 109.6 plus or minus 1 and 109.8 plus or minus 0.7 deg . In dimethylphosphine the angle C--P--C was 99.2 plus or minus 0.6 deg . The methyl groups were found to be in staggered conformations. The distances and root-mean-square amplitudes of vibration agreed well with the values determined in recent studies of phosphine and trimethylphosphine. (auth)

• Research Organization: Iowa State Univ., Ames; Univ. of Michigan, Ann Arbor
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-012559
• OSTI ID: 4145678
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 32; ISSN JCPSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
DIFFRACTION
ELECTRONS
ERRORS
METHYL RADICALS
PHOSPHINES
PHOTOMETRY
QUANTITATIVE ANALYSIS
VIBRATIONS