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   12.000 000 0(0)   0.9893(8)    12.0107(8) g,r

13   13.003 354 8378(10)   0.0107(8)

14   14.003 241 989(4)

7 N 14   14.003 074 004 8(6)   0.996 36(20)    14.0067(2) g,r,a,d

15   15.000 108 898 2(7)   0.003 64(20)

17 Cl 35   34.968 852 68(4)   0.7576(10)    35.453(2) m

37   36.965 902 59(5)   0.2424(10)

NIST Physics 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.