Zeeman Quadrupole Spectrum of Cyanuric Chloride

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Abstract
Zeeman splitting studies of the Cl35 pure quadrupole resonances in cyanuric chloride have been carried out. Location of the principal electric field gradient axes demonstrated that cyanuric chloride is a planar molecule, with a threefold rotation axis perpendicular to the molecular plane. The planar molecules all lie in the (1, 0, 1) planes of the monoclinic crystal. It seems likely that the molecules are oriented within these planes so that each molecule has a carbon‐chlorine bond lying along the b crystallographic axis. The field gradient asymmetry parameter is 0.24 for all the Cl atoms. This result is interpreted in terms of the effect of the ring nitrogens on the double‐bond character of the carbon‐chlorine bond.

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