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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	Stereoselective Electron-Transfer Reaction between Optical Active Cobalt(Ⅲ) Complex and Racemic Cobalt(Ⅱ) Complex 광학활성 코발트 (Ⅲ) 착물과 라세미-코발트(Ⅱ) 착물간의 입체선택적 전자전달반응
Author	Dong-Jin Lee, Maeng-Jun Jung, Myung-Ki Doh 이동진, 정맹준, 도명기
Keywords
Abstract	광학활성인 Λ-[CO(EDDS)]-와 리간드의 conformation 변화에 있어 제한되는 착물인 [Co(±chxn)3]2+간의 전자전달반응에 따른 입체선택성을 수용액 중에서 조사한 결과 4개의 conformational isomer(lel3, lel2ob, lelob2, and ob3)가 존재하는 △-[Co(chxn)3]3+가 생성되었으며 각 이성질체의 광학순도는 각각 22% e.e, 25% e.e, 11% e.e, 10% e.e로서 나타났다. Λ-[CO(EDDS)]-와 [Co(±chxn)3]2+간의 전자전달반응에 따른 입체선택성을 DMSO 중에서 반응시킨 결과 두 개의 conformational isomer(lel3, lel2ob)을 포함하는 △-[Co(chxn)3]3+가 생성되었으며 광학순도는 lel3의 경우가 100% e,e로 나타났으며, lel2ob의 경우는 75% e.e로 나타났다. The stereoselectivity on the electron-transfer reaction between optical active Λ-[CO(EDDS)]- and conformationally restricted complex [Co(±chxn)3]2+ has been examined in aqueous solution. The products are four conformational isomers (lel3, lel2ob, lelob2, and ob3) of △-[Co(chxn)3]3+ with optical purities of 22% e.e, 25% e.e, 11% e.e, and 10% e.e, respectively. The reaction between Λ-[CO(EDDS)]- and [Co(±chxn)3]2+ in DMSO produced lel3-△ and lel2ob-△-[Co(chxn)3]3+ whose optical purities are 100% e.e, and 75% e.e, respectively.
Page	500 - 505
Full Text	PDF

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