Abstract
Abstract Experimental values for the diagonal elements of the 14N quadrupole coupling tensor derived from analysis of the hyperfine structure of low-J rotational transitions are reported for the two lowest states of the amino wagging mode. They show the expected difference due to averaging over the large amplitude amino wag. A semirigid bender analysis of previously published infrared data provides the inversion angle expectation values for use in a quantum-chemical calculation of the corresponding effective Coulomb field gradients at the nitrogen nucleus. The results are compared to those obtained earlier for the related molecules vinylamine, cyanamide and ammonia.
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