NITROGEN-14 NUCLEAR MAGNETIC RESONANCE DETERMINATION OF QUADRUPOLE COUPLING CONSTANTS OF METHYL ISOCYANIDE AND ETHYL ISOCYANIDE

Nitrogen-14 nmr line width data for liquid MeNC and EtNC are indicative of nitrogen quadrupole coupling constants of 0.27 and 0.30 MHz, respectively. The substantial difference from the previously reported microwave value of 0.483 MHz for MeNC in the gas phase is considered to be real and to reflect alterations in electron distribution associated with the condensed phase.