DETERMINATION OF A(0) AND D(K)0 OF (CH3F)-C-13 FROM THE DELTA-K=+/-2 FORBIDDEN TRANSITIONS TO THE UPSILON-5 = 1 VIBRATIONAL LEVEL

被引:10
作者
PAPOUSEK, D
PAPOUSKOVA, Z
HSU, YC
PRACNA, P
KLEE, S
WINNEWISSER, M
DEMAISON, J
机构
[1] UNIV LILLE 1, CNRS, SPECT HERTZIENNE LAB, F-59655 VILLENEUVE DASCQ, FRANCE
[2] ACAD SINICA, INST ATOM & MOLEC SCI, TAIPEI 10764, TAIWAN
[3] CZECHOSLOVAK ACAD SCI, J HEYROVSKY INST PHYS CHEM & ELECTROCHEM, CS-18223 PRAGUE 8, CZECHOSLOVAKIA
[4] UNIV GIESSEN, INST PHYS CHEM, W-6300 GIESSEN, GERMANY
[5] NATL TAIWAN UNIV, DEPT CHEM, TAIPEI 10764, TAIWAN
关键词
D O I
10.1006/jmsp.1993.1104
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
The Fourier transform spectrum of the vibration-rotational bands υ2 and υ5 of gaseous fluoromethane 13CH3F was measured at an unapodized resolution 0.0041 cm-1. Among the assigned lines, 102 belonged to the Δk = ±2 perturbation-allowed transitions to the doubly degenerate vibrational state v5 = 1. Combination differences were generated for the ground state of 13CH3F from the wavenumbers of the allowed and forbidden vibration-rotational transitions to the v5 = 1 level. They were used in a simultaneous least squares fit with the previously measured microwave, submillimeterwave, and far infrared transition frequencies of the pure rotational transitions in the ground state and with the combination differences generated from the allowed transitions to the v3 = 1 state of 13CH3F (Pracna, Klee, Winnewisser, Papoušek, Yen-Chu Hsu, and Hann-Sen Chen, J. Mol. Spectrosc.156, 217-226 (1992). This made it possible to determine precisely for the first time A0 and D0K for 13CH3F: A0 = (5.1824246 ± 0.0000015) cm-1, D0K = (70.912 ± 0.033) × 10-6 cm-1. © 1993 Academic Press, Inc.
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页码:62 / 68
页数:7
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