The microwave spectrum of chlorine dioxide has been investigated and several rotational transitions assigned. The resulting rotational constants (in Mc) are:35 0 2 : CF0 2 : ,4 = 52 072, ,4=50 725, 5 = 9952, 5 = 9952, C = 8332; C = 8295.These constants are limited in precision by the presence of hyperfme structure which has been only approximately treated. The structural parameters of chlorine dioxide as obtained from the rotational constants are fci-o = 1.473 ±0.01 A; <0 -CI -0 = 117° 36'±1°. Approximate hyperfme constants are given.
Articles you may be interested inDetection, assignment of the microwave spectrum and the molecular Stark and Zeeman effects in CSe, and the Zeeman effect and sign of the dipole moment in CS The Stark and Zeeman effects of CI02 have been observed in the rotational spectrum of CI02• The dipole moment resulting from the Stark-effect measurements is 1. 784±O.01 D. The Zeeman effect was observed to fit the calculated spectrum for the interaction of a free electron with the magnetic field. The anisotropic components of the g factor are too small (about 1%) to be measured reliably with low magnetic fields.
The hyperfine structure of the microwave spectra of C1 36 0 2 and C1 37 C>2 has been analyzed. It was found possible to fit the hyperfine splitting within experimental error with the Hamiltonian:Also, several rotational transitions of C1 36 0 16 0 18 have been observed and assigned.
i,],k i,jThe quantity N (with components N a , Nb, N c ) is the rotational angular momentum operator. Similarly, S is the electronic spin operator. The quantities (ij)s, (ij)i, (IJ)Q are components of symmetric, traceless, secondrank tensors which are constants in the frame rotating with the molecule. The quantities (k)s and (i)i are components of an axial vector which is a constant in the molecular frame.
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