Bulletin of the Chemical Society of Japan p. 181 - 185 (1981)
Update date:2022-08-16
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Uchiyama, Toshihiko
Toshiyasu, Yoshio
Nakamura, Yukio
Miwa, Toshio
Kawaguchi, Shinichi
The reaction of platinum(II) chloride with neat benzonitrile gave bis(benzonitrile)dichloroplatinum(II) as a mixture of cis and trans isomers in variable proportions, depending on the temperature.The geometry of the chromatographically separated isomers was identified on the basis of the dipole-moment and IR data.The 13C NMR spectra in CDCl3 also enabled us to discriminate between isomers in both chemical shift and coupling to the 195Pt of the cyanide carbon, the resonance peak of which was utilized to follow the isomerization.The rate constant (kc) for the cis-to-trans isomerization was found to be (3.8 +/- 0.3) * 10-6 s-1 in CDCl3 at 25 deg C, ten times larger than that
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