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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 35, Number 5
JKCSEZ 35(5)
October 20, 1991

Title	Circular Dichroism Spectra on the Counter Ions and the Solvent Dependence of trans-[Co(R,R-chxn)2Cl2]+ Complex trans-[Co(R,R-chxn)2Cl2]+ 착물의 대이온 및 용매의존성 원편광이색성 스펙트라
Author	Chang Eon Oh, Yang Kim, Sung Yeul Park, Myung Ki Doh 오창언, 김양, 박성렬, 도명기
Keywords
Abstract	여러 가지 유기용매에서 서로 다른 대이온을 가진 trans-[Co(R,R-chxn)2Cl2]+ 착물의 원편광이색성(CD) 스펙트럼을 측정하였다. 여기서 R,R-chxn은 (1R,2R)-1,2-diaminocyclohexane 이다. 착물의 CD 스펙트럼에서 관찰된 변화는 현저한 용매의존성을 나타내었다. 그리고 첫 흡수띠 영역(1A2g)에서 CD 스펙트럼의 변화 정도는 용매의 donor number(DN)에 의존하였다. trans-[Co(R,R-chxn)2Cl2]+ 착물의 CD 스펙트럼 변화는 1H NMR 스펙트럼으로부터 R,R-chxn 리간드 중의 수평방향의 N-H 수소와 용매분자와의 우선적인 상호작용에 기인되는 것으로 해석되었다. The circular dichroism (CD) spectrum of trans-[Co(R,R-chxn)2Cl2]+ complex with different counter-ions have been measured in several organic solvents, where R,R-chxn is (1R,2R)-1,2-diaminocyclohexane. The observed variations in the CD spectrum of the complex exhibited remarkable solvent dependences. And it has been observed that the degree of the change of CD spectrum in the first absorption band region (1A2g) depends on the donor number (DN) of the solvents. From 1H NMR spectrum, it is interpreted that these variations in the CD spectrum of trans-[Co(R,R-chxn)2Cl2]+ complex are due to the favorable interaction between solvent molecules and the equatorial N-H protons of R,R-chxn ligands.
Page	493 - 499
Full Text	PDF

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