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The preparation and characterization of compounds of the types PtEt2diphos and PtEtCldiphos. Correlations of the 31P.N.M.R. spectral parameters with ring size

✍ Scribed by D.A. Slack; M.C. Baird

Book ID
104139154
Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
396 KB
Volume
24
Category
Article
ISSN
0020-1693

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✦ Synopsis

A series of compounds of the type PtEtzdiphos (diphos = 1,2_diphenylphosphinoethane, dppe; 1,3diphenylphosphinopropane, dppp, and l,Cdiphenylphosphinobutane, dppb) has been prepared. Selective cleavage of one ethyl group by hydrogen chloride gives the chloroethyl derivative, PtEtCldiphos, in each case, although an attempt to prepare [PtCl(&H,)dppp]BF4 by abstraction of hydride from PtEtCldppp using triphenylmethyl cation failed. Hydride abstraction occurs, but the ethylene is readily displaced by jluoroborate anion. Correlations of phosphorus chemical shifts and platinum-phosphorus coupling constants with ring size are noted for both series of compounds.

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8 and 16-Membered ring phosphorus compou
8 and 16-Membered ring phosphorus compounds. Ring size dependence of the NMR parameters
✍ J. Martin; J. B. Robert πŸ“‚ Article πŸ“… 1981 πŸ› John Wiley and Sons 🌐 English βš– 628 KB

## Abstract The ^1^H NMR spectral analysis of four 8‐membered rings, 2‐thioxo‐ (or 2‐oxo‐) 2‐R‐1,3,6,2‐ trithiaphocane, is reported. The stereochemistry of the 8‐membered ring is discussed. The ^31^P NMR spectral parameters [Ξ΄^31^P, ^1^__J__(PC)] obtained on several cyclic 1,3,2‐dithiaphospha compo