134249-23-3Relevant academic research and scientific papers
The First Hydrides of a Phosphorus Sulfide Cage: Nuclear Magnetic Resonance Evidence for α-Tetraphosphorus Trisulfide Hydride Compounds
Tattershall, Bruce W.,Kendall, Nigel L.
, p. 3163 - 3168 (2007/10/02)
The hydrides α-P4S4(H)R (R = H, I, NMePh or SPh) have been prepared in solution by the reaction of α-P4S3I2 or of the corresponding α-P4S3(I)R with Sn-n-Bu3H, and identified by 31P NMR spectroscopy.The compounds were unstable and not isolated.Ab initio molecular orbital calculations of geometry have been carried out for α-P4S3H2, α-P4S3(NMe2)2 and α-P4S3H(NMe2).
Phosphorus-31 Nuclear Magnetic Resonance Parameters for Amino Compounds with the α-Tetraphosphorus Trisulphide Skeleton
Tattershall, Bruce W.
, p. 483 - 487 (2007/10/02)
Phosphorus-31 NMR spectra have been recorded and assigned for α-P4S3X2 1 and α-P4S3X(Y) 2 (X = NMe2, NEt2, NMePh, NEtPh, or NPh2; Y = I), and for a mixed-amino compound 2 (X = NPh2, Y = NEt2).All compounds were unstable and were not isolated.For the symmetric molecules 1 (X = NRR') the 2J(PP) couplings were generally much less positive, the 1J(PP) couplings were much more negative, and the bridgehead chemical shifts were to lower frequency, than for other α-P4S3 compounds reported previously.New predictive relationships between NMR parameters for unsymmetric compounds and those for symmetric compounds have been found.The 1J(PP) couplings along opposite edges of the P4 cage of the unsymmetric compounds α-P4S3X(Y) deviated from values for the corresponding symmetric compounds (α-P4S3X2 and α-P4S3Y2) by similar but opposite amounts.Chemical shifts of the two bridgehead phosphorus nuclei similarly showed approximately equal and opposite deviations from the shifts found for symmetric compounds.
