Synthesis and Structural Characterization of Optically Active Bis(L-Prolinato)(2,2'-bipyridine)Co(Ⅲ) and Bis(L-Prolinato)(1,10-phenanthroline)Co(Ⅲ)

광학활성 비스(L-Prolinato)(2,2'-bipyridine)코발트(Ⅲ)와 비스(L-Prolinato)(1,10-phenanthroline)코발트(Ⅲ)의 합성과 구조적인 특성

  • Oh, Chang Eon (Department of Chemistry, Yeungnam University) ;
  • Kim, Bok Jo (Department of Chemistry, Yeungnam University) ;
  • Yoon, Doo Cheon (Department of Chemistry, Yeungnam University) ;
  • Doh, Myung Ki (Department of Chemistry, Yeungnam University) ;
  • Heo, Nam Ho (Department of Industrial Chemistry, Kyungpook National University)
  • 오창언 (영남대학교 이과대학 화학과) ;
  • 김복조 (영남대학교 이과대학 화학과) ;
  • 윤두천 (영남대학교 이과대학 화학과) ;
  • 도명기 (영남대학교 이과대학 화학과) ;
  • 허남호 (경북대학교 공과대학 공업화학과)
  • Published : 19950900

Abstract

Reaction between trans-$[Co(py)_4/Ci_2]^+(py=pyridine)$ and L-proline and diimine (=2,2'-bipyridine, 1,10-phenanthroline) gives two products, $[Co(L-pro)_2/(bipy)]^+$ and $[Co(L-pro)_2(phen)]^+$ complexes, respectively. On column chromatography, $[Co(L-pro)_2(bipy)]^+$ was obtained only as $Lambda$-trans(N) and $[Co(L-pro)_2(phen)]^+$ was obtained both as ${\Delta}$-trans(N) and $Lambda$-cis(O)cis(N) due to the stereoselectivity of L-prolinato which was stereospecific. Crystal data are as follows: $Lambda$-trans(N)-$[Co(L-pro)_2(bipy)]CIO_4{\cdot}2H_2O$ (1): monoclinic, space group $P2_1(#4)$, a=9.807(3), b=10.421(1), c=12.778(2) ${\AA}$, ${\beta}=109.90(2)^{\circ}$, V=1227.8(5) ${\AA}^3$, Z=2; 1571 data with I > 3.0${\sigma}$(I) were refined to R=0.060, $R_W = 0.067$; ${\Delta}$-trans(N)-$[Co(L-pro)_2(phen)]Cl{\cdot}_3H_2O$(2): monoclinic, space group $P2_1(#4)$, a=9.838(2), b=12.892(2), c=10.747(2)${\AA}$, ${\beta}=113.79(2)^{\circ}$, V=1247.2(4) ${\AA}^3$, Z=2; 2433 data with I > 3.0${\sigma}$(I) were refined to R=0.043, $R_W = 0.050$.

Keywords

References

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