Abstract
The preparation of the compounds: (C6H5CH2)2NP(O)Cl2, (CH3)(C6H5CH2)NP(O)Cl2, (C6H5CH2)2NP(O)(Cl)OC6H4CH3, (CH3)(C6H5CH2)NP(O)(Cl)OC6H4CH3, (C6H5CH2)2 NP(O)(F)OC6H4CH33, (CH3)(C6H5CH2)NP(O)(F)OC6H4CH3 and (CH3)2NP(O)(F) OC6H4NO2 is described and they are characterized by 1H- 13C-, 31P-, 19F-NMR and IR-spectroscopy. Acccording to their spectroscopic data the properties of the P-N and P[dbnd]O bonds are strongly dependent on the substituents. Long-range couplings (7JPH) of some compounds have been measured. The 1H-NMR spectra of the molecules were measured at different temperatures in order to study the rotation of P-N bond.
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