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13C and 31P solid-state NMR studies of bis(dialkoxythiophosphoryl) disulfides

โœ Scribed by Po-Jen Chu; Marek J. Potrzebowski

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
584 KB
Volume
28
Category
Article
ISSN
0749-1581

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โœฆ Synopsis

Abstract

The principal elements of the chemical shift tensors for the phosphorus atoms in three bis(dialkoxythiophosphoryl) disulfides were determined from both static and magic angle spinning NMR spectra, using the intensities of the peaks in the spinning sidebands relative to those of the central band in the latter method. These studies show that it is possible to deduce a mode of molecular motion in the solid state by analysis of the shielding parameters. Variableโ€temperature ^13^C and ^31^P CP MAS NMR of these samples from 190 to 320 K revealed a peculiar motion of the methoxy group and a rigid P๏ฃฟS๏ฃฟS๏ฃฟP backbone for bis(dimethoxythiophosphoryl) disulfide. In addition, these studies confirmed that it is possible to distinguish the different xโ€ray crystal structures from the solidโ€state NMR experiment.

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