Infrared Spectrum of σ2for B10F3and B11F3

Autor:	Alvin H. Nielsen
Rok vydání:	1954
Předmět:	Abundance (chemistry) Chemistry Infrared Analytical chemistry General Physics and Astronomy Physical and Theoretical Chemistry Grating Complete resolution Spectral line
Zdroj:	The Journal of Chemical Physics. 22:659-664
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1740143
Popis:	The infrared grating spectra of σ2 for B10F3 and B11F3 have been reexamined from 650 to 750 K. Two samples of BF3, one composed of 93.4 percent B10F3 and 6.6 percent of B11F3, and the other of the normal abundance ratio 20 percent B10F3 and 80 percent B11F3 were secured for the investigation. Complete resolution of the rotational fine structure of this parallel‐type band was achieved. The following constants were obtained by means of the usual sort of rotational analysis: for B10F3, σ0 = 718.23 K, B0 = 0.35272 K, B(v2 = 1) = 0.35288 K, DJ = 13.72×10—7 K. For B11F3, σ0 = 691.45 K and the rotational constants are the same for the two isotopic species.
Databáze:	OpenAIRE
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