Accession Number:

AD0628118

Title:

MICROWAVE SPECTRUM, INTERNAL BARRIER, MOLECULAR STRUCTURE AND DIPOLE MOMENT OF DISILANYL FLUORIDE.

Descriptive Note:

Technical rept.,

Corporate Author:

MALLINCKRODT CHEMICAL LAB HARVARD UNIV CAMBRIDGE MASS

Personal Author(s):

• Cox,A. Peter
• Varma,Ravi

Report Date:

1965-01-01

Pagination or Media Count:

25.0

Abstract:

The microwave spectra of five isotopic species of disilanyl fluoride Si2H5F were studied in the region 12-38 Gcsec. Several of the ground state transitions are split into doublets, some into triplets, due to the coupling of internal and overall rotation. Analysis of the splittings gives a barrier value V-3 1048 plus or minus 40 calmole. Rotational constants were determined for molecules containing silicon-28, -29 and -30 isotopes in each positions, and were used to calculate the structure. Stark effect measurements yield mu-A 0.934 D, mu-B 0.850 D and a total dipole moment mu 1.26 plus or minus 0.01 D inclined at an angle of 10 degrees to the SiF bond. Author

Descriptors:

• *MICROWAVES
• *CHEMICAL BONDS
• *MOLECULAR STRUCTURE
• *DIPOLE MOMENTS
• FLUORIDES
• SILANES
• SILANES
• SILANES
• SILANES
• MOLECULAR ENERGY LEVELS
• ELECTRON TRANSITIONS
• ISOTOPES
• MOLECULAR SPECTROSCOPY

Subject Categories:

• Inorganic Chemistry
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE