Oxyphosphorus v Compounds

Improved preparative methods are reported for XPF2(NCO), X = O or S, using the corresponding chloride and silver cyanate at low temperature 300 the oxygen compound gives the expected carbamates and thiocarbamates on treatment with, respectively, alcohols and thiols. 

Equilibrium constants for the exchange of fluorine and chlorine in methyl-phosphonyl, -thiophosphonyl, and -selenophosphonyl centres310 and 

During an investigation of the chemistry of allyl difluorophosphite, a number of complexes containing the difluorophosphonate group, e.g. [Pt-(PF20)4]2 and [Pd(PF20)4]2, were isolated.312 

Spin-spin coupling constants for a number of phosphonic acid difluorides RP(0)F2 have been evaluated from H- 31P and H- 19F double-resonance experiments.313 Force-constant calculations using a simplified valence force field are reported for the compounds XPF2OMe and XPF(OMe)2, where X = 0 or S.314 

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Oxyphosphorus (v) Compounds. Raman spectra of OPX3 (X = C1 or F) and SPC13 in the gas phase have been measured and analysed to give values of the Coriolis constants.334 Anisotropic e.s.r. studies on POCl3 have been interpreted in terms of a trigonal-bipyramidal structure with Cs symmetry.335... 

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