STUDIES ON ORGANOPHOSPHORUS COMPOUNDS .98. SPECTROSCOPIC INVESTIGATIONS OF 1-SUBSTITUTED 5-TRIFLUOROMETHYL IMIDAZOLE-4-PHOSPHONATE AND 1-SUBSTITUTED-5-TRIFLUOROMETHYL IMIDAZOLE-4-CARBOXYLATE

Based on electron impact and high resolution mass spectroscopic data a nd metastable ions measurements, fragmentation pathways of title compo unds are postulated. The investigation of LSC NMR data indicates a hig hly hindered interannular delocalization over the imidazole and phenyl rings of these compounds. An excellent correlation are found between the logarithm values of P-31 NMR chemical shifts and a parameters of t he nuclear substituents on the phenyl ring.