ISSN:
0749-1581
Keywords:
31P NMR isotope effects
;
Phosphorotrithioous acid, triesters
;
Phosphorotrithioic acid, S,S,S-triesters
;
Tetraphosphorus trisulphide
;
Tetraphosphorus heptasulphide
;
Tetraphosphorus octasulphide
;
Tetraphosphorus nonasulphide
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 34S isotope effect on the chemical shift of PIII nuclei in P(SR)3 esters [R = Et, (C12H25)n, Ph] is close to 20.6 ppb per PIII—34S bond, i.e. 3-4 times larger than for thiolo sulphur atoms in S = P(SR)3 or O = P(SR)3. A similar behaviour is noted for the P(—S—)3 sites in P4S9 and P4S3 and for the downfield triplet of P4S8, which, accordingly, is assigned to the tri-coordinate P atoms of this sulphide. 13C isotope effects are also reported for trialkyl(aryl) phosphorotrithioites and S,S,S-phosphorotrithioates.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260290307
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