Phosphorus-nitrogen compounds. Part 56. The solution synthesis of some trans-1,3-dialkyl-2,4-diphenyl-2,4-dithiocyclodi-λ5- phosphazanes and their proton, carbon-13, and phosphorus-31 nuclear magnetic resonance spectra

Article abstract of DOI:10.1039/DT9880002683

A series of trans-1,3-dialkyl-2,4-diphenyl-2,4-dithiocyclodi- λ⁵-phosphazanes, [PhP(S)NR]₂ (R = Me, Et, Pr ⁿ, Prⁱ, Buⁿ, Buⁱ, Bu^s, Bu^t, neopentyl, CH₂Ph, or cyclohexyl) has been synthesized by a solution method and their proton, carbon-13, and phosphorus-31 n.m.r. spectra obtained. The relationships between phosphorus-31 and carbon-13 n.m.r. chemical shift data are explored; interpretation of proton n.m.r. data has led to the assignment of trans structures for the cyclodi-λ⁵- phosphazane molecules. Inductive and resonance substituent coefficients have been evaluated using the dual-substituent parameter method from the relative shieldings of the meta- and para-carbon nuclei in the phenyl ring.

Full text of DOI:10.1039/DT9880002683

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