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Structure, 31P and 13C chemical shift anisotrophy of (CH3)3P, (CH3)3PO, (CH3)3PS and (CH3)3PSe as determined by liquid crystal NMR spectroscopy

✍ Scribed by Jean-Pierre Albrand; André Cogne; Jean-Bernard Robert

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 315 KB
Volume: 48
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)85085-9

No coin nor oath required. For personal study only.

✦ Synopsis

Rcwscd mnnuscript rcccivcd 29 %farch 1977

The 3t P and 13C spectra of the trlply t3C labcllcd molecules (CH&P, (CII&PO, (CH3)3PS and (Cl-i3)3PSc onentcd in a ncmatlc phase arc reportcd. The C-I'-C bond angles hdve been measured. The 31P chemical shift tensor shows a large amsotropy except tn the ca5c of (CII3)3P. The abnormal large V&K observed for the P:Se bond length suggests B large amsotropy of the tJ(P-Sc) spin couphng.

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