%A Meng Qing-Jin; Sun Shou-Heng; Zhu Dan-Hong; Chen Wei-Bing; P.H.Rieger
%T Chemical Exchange of Ligand PR″_{3} of (RC_{2}R)Co(CO)(PR″_{3})_{2} IN SOLUTION——TRIPLE-JUMP KINETIC MODEL
%0 Journal Article
%D 1991
%J Acta Phys. -Chim. Sin.
%R 10.3866/PKU.WHXB19910502
%P 518-523
%V 7
%N 05
%U {https://www.whxb.pku.edu.cn/CN/abstract/article_23719.shtml}
%8 1991-10-15
%X This paper described a detailed theoretical analysis of ESR spectrum line width of the cobalt complex (RC_2R/)Co(CO)(PR"_3)_2 in solution. Triple-jump kinetic model was first used in the Trans-Cis isomerism of the complex.A formula concerning ESR line width as a function of the basic line width T_(20)~(-1), hyperfine splitting constants of all isomers in solution, and lifetime of the exchange of ligand PR"_3 were suggested on the relationship between the correlation function and the hyperfine splitting constant. The calculated, exchange lifetime of the ligand P(OEt)_3 in the title complex (Ph_2C_2)Co(CO)[P(OEt)_3]_2 at 290 K is 5.6×10~(-11) s.