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8101833 
Journal Article 
PHOSPHORUS-31 AND RHODIUM-103 NUCLEAR MAGNETIC RESONANCE SPECTRA OF SOME RHODIUM(I) AND RHOIUM(III) PHOSPHINE COMPLEXES 
Brown, TH; Green, PJ 
1970 
Yes 
Journal of the American Chemical Society
ISSN: 0002-7863
EISSN: 1520-5126 
92 
8 
2359-+ 
English 
WOS:A1970G015100027 
The high resolution 31P and 103Rh nuclear magnetic resonance spectra of several halide complexes of rhodium(I) with triphenylphosphine and of rhodium(III) with tributylphosphine have been measured in methylene chloride solution. The phosphorus chemical shifts appear to be dependent mainly on the electronegativities of the neighboring atoms. Substitution of various halogens in the complexes has the major influence on the coupling constant between the rhodium atom and the phosphorus atom which is trans to the halogen atom. In addition the absorption spectra of the complexes were measured in methylene chloride solution. The rhodium chemical shifts are dependent on the oxidation state of the rhodium atom as well as on the electronegativities of the substituents but are not dependent mainly on the ΔE term in the Ramsey equation for the shifts. © 1970, American Chemical Society. All rights reserved.