Microwave Determination of the Centrifugal Distortion Constants of C $H_{3}$ Cl, C $H_{3}$ Br, C $H_{3}$ I, BrCN, and ICN

The values of

B

D_{J}

, and

D_{JK}

in the ground vibrational state for the heavier methyl halides, and values of

B

and

D_{J}

for BrCN and ICN have been calculated from microwave spectroscopic measurements in the three to five-mm wave-length region. The values of

B_{0}

in Mc/sec.,

D_{J}

in kc/sec., and

D_{JK}

in kc/sec. in that order are, for C

H_{3}

{Cl}^{35}

: 13292.95, 26.4, and 189; for C

H_{3}

{Cl}^{37}

: 13088.24, 27.0, and 184; for C

H_{3}

{Br}^{79}

: 9568.188, 11.1, and 129.4; for C

H_{3}

{Br}^{81}

: 9531.845, 10.7, and 129.0; for C

H_{3}

I: 7501.310, 7.95, and 99.4. Values of

B_{0}

in Mc/sec. and of

D_{J}

in kc/sec. are, for

{Br}^{79}

CN: 4120.230 and 0.91; for

{Br}^{81}

CN: 4096.804 and 0.81; for ICN: 3225.578 and 0.88. Frequencies of observed lines are given in tables for calibration purposes.

This publication has 5 references indexed in Scilit:

Microwave Determination of the Centrifugal Distortion Constants of CH3Cl, CH3Br, CH3I, BrCN, and ICN