ClCN Spectral Data Options

ClCN Spectral Data Options

The following information may be useful
in choosing which isotopes to search.

Isotope Relative
Atomic Mass Isotopic
  Composition   Standard
Atomic Weight Notes

6 C 12   12.0000000(00)   0.9893(8) [12.0096, 12.0116]

13   13.003 354 835 07(23)   0.0107(8)

14   14.003 241 9884(40)

7 N 14   14.003 074 004 43(20)   0.996 36(20) [14.006 43, 14.007 28]

15   15.000 108 898 88(64)   0.003 64(20)

17 Cl 35   34.968 852 682(37)   0.7576(10) [35.446, 35.457] m

37   36.965 902 602(55)   0.2424(10)

NIST Physical Measurement Laboratory

Constants Data for ClCN
References for ClCN
NIST Chemistry Webbook Search for ClCN

Specific Corrections and Reanalysis of the Data:

The frequency for the υ₂ = 1, J = 2-1, F = 7/2-5/2 transition of ³⁵Cl¹²C¹⁴N given by Townes et al. [48002] should read 23 938.6 MHz and not 23 928.6 MHz. In table IV of reference [51003] the column headings should be reversed for the observed transitions. In table IX of reference [56005] the J = 18-17 transitions for ³⁷ClCN are not consistent with the other observations. These are not included in the present work. The Cl-C stretching vibration labeled υ₃ here rather than υ₁ as given in the literature.