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1.4-Dibora-2,5-cyclohexadiene 유도체를 리간드로 갖는 니켈 Double-decker 착물의 합성

Synthesis of Nickel Double-decker Complexes Containing 1,4-Dibora-2,5-cyclohexadiene Derivatives as Ligand

  • 엄재국 (계명대학교 자연과학부 화학전공)
  • Eom, Jae Guk (Department of Chemistry, College of Natural Science, Keimyung University)
  • 발행 : 2002.06.20

초록

(${\eta}^5$-Cyclopentadienyl)(${\eta}^6$-1,2,3,4-tetramethyl-1,4-dibora-2,5-cyclohexadiene)Ni(5)는 cyclopentadienyl (carbonyl)-nickel dimer와 1,2,3,4-tetramethyl-1,4-dibora-2-cyclohexene (1)을 반응시켜서 주생성물로 얻었다. Di-allyl nickel과 2,3-diethyl-1,4-dimethyl-1,4-dibora-2-cyclohexene (2)을 -20$^{\circ}C$에서 반응시켜서 bis[${\eta}^6$-2,3-dimethyl-1,4-diethoxy-1,4-dibora-2,5-cyclohexadiene]nickel (6) 착화합물을 15% 수율로 생성하였다. 그리고 야-allyl nickel과 2,3-dimethyl-1,4-diethoxy-1,4-dibora-2-cyclohexene (3)을 역시 -20$^{\circ}C$에서 반응시켜서 22% 수율로 bis[${\eta}^6$-2,3-dimethyl-1,4-diethoxy-1,4-dibora-2,5-cyclohexadiene] nickel (7)을 생성하였다. 이들 double-decker 착화합물들은 불안정하여 분리하기 어려웠으며, NMR, MS, 원소분석 등으로 확인하였다.

(${\eta}$5-Cyclopentadienyl)(${\eta}$6-1,2,3,4-tetramethyl-1,4-dibora-2,5-cyclohexadiene)Ni (5) was synthe-sizedas a main product by the reaction of cyclopentadienyl(carbonyl)nickel dimer and 1,2,3,4-tetramethyl-1,4-di-bora-2-cyclohexene (1). Di-allyl nickel reacted with 2,3-diethyl-1,4-di-methyl-1,4-dibora-2-cyclohexene (2) at -20$^{\circ}C$ to give bis(${\eta}$6-2,3-diethyl- 1,4-dimethyl-1,4-dibora-2,5-cyclohexadiene)nickel (6) in the yield of 15%. By the reaction of di-allyl nickel and 2,3-dimethyl-1,4-diethoxy-1,4-di- bora-2-cyclohexene (3) at -20$^{\circ}C$ bis[${\eta}$6-2,3-dim-ethyl-1,4-diethoxy-1,4-di- bora-2,5-cyclohexadiene]nickel (7) was obtained in 22% yield. These double-decker complexes were difficult to separate because of their unstabilities and were identified by ESR, NMR, MS and ele-mental analysis, etc.

키워드

참고문헌

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피인용 문헌

  1. 1,4-Dibora-2,5-Cyclohexadiene 유도체를 리간드로 갖는 철 착물의 합성 vol.47, pp.2, 2002, https://doi.org/10.5012/jkcs.2003.47.2.179