Abstract
The anisotropies of the 13C 13C and 13C 15N spin-spin coupling constants of acetonitrile were determined by application of the method of partially oriented molecules. The relative anisotropy,, R = ΔJ J , of the 13C 13C coupling constant was found to be 2.0 ± 0.4. Because of large errors in the 13C 15N internuclear distances, the anisotropies of the corresponding coupling constants are less reliable. ( R = 11 ± 6 for the one-bond and −5 ± 3 for the two-bond coupling). The observed one-bond coupling tensors are compared with extended Hückel level calculations.
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