Isotope Effects on 31P Nuclear Shielding in Thiophosphites

DOI: 10.1002/mrc.1260290307

Source and publish data:

Magnetic Resonance in Chemistry p. 231 - 237 (1991)

Update date:2022-08-12

Topics:

Authors:

Demarcq, Michel C.

Gleut, Louis Le

Hemelryck, Bruno G. Van

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Article abstract of DOI:10.1002/mrc.1260290307

The 34S isotope effect on the chemical shift of P^III nuclei in P(SR)3 esters is close to 20.6 ppb per P^III-34S bond, i.e. 3-4 times larger than for thiolo sulphur atoms in S=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.

Full text of DOI:10.1002/mrc.1260290307

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