Cobalt(III) Complex of Ethylenediamine-N,N'-di-${\alpha}$-Isobutyric Acid

Ethylenediamine-N,N'-di-${\alpha}$-Isobutyric Acid의 코발트(III) 착물

  • 전무진 (연세대학교 이과대학 화학과) ;
  • 한창윤 (연세대학교 이과대학 화학과) ;
  • 박장우 (연세대학교 이과대학 화학과) ;
  • 최승락 (연세대학교 이과대학 화학과) ;
  • 박광하 (강릉대학교 화학과)
  • Published : 1986.02.20

Abstract

A newflexible $N_2O_2$-type tetradentate ligand. Ethylenediamine-N,N'-di-${\alpha}$-isobutyric acid(eddib), has been synthesized, and dichloro cobalt(III) complex of eddib has been prepared via the air-oxidation technique. Only S-cis isomer has been yielded during the preparation of complex. Ring strain and steric hinderance are cited as the cause for the preference for the S-cis geometric configuration. On series of cobalt(III) complexes of eddib, $[Co(eddib)L]^{n+}$ $(L = Cl{\cdot}(H_2O),\;CO_3^{2-},\;(H_2O)_2)$have been prepared in situ. In their electronic absorption spectra, the absorption maxima and their intensities of the above series of complexes are on the ordinary line of the spectrochemical and hyperchromic series. Elemental analysis, IR, NMR and electronic absorption spectra have been used to characterize the complex and geometries of the complex.

Keywords

References

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