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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 38, Number 3
JKCSEZ 38(3)
June 20, 1994 

The Complex Formation of Gallium Bromide with i-Butyl Bromide in Nitrobenzene)

니트로벤젠용액내에서의 브롬화갈륨과 i-브롬화부틸과의 착물형성에 관한 연구
Oh Cheun Kwun, Jinhi Namkung, Young Hoon Lee

권오천, 남궁진희, 이영훈
니트로벤젠용액내에서의 i-브롬화브텔의 용해도를 19, 25, 40℃에서 브롬화갈륨이 있을 때와 없을때에 각각 측정하여 보았다. 브롬화갈륨이 존재할 때에는 용액내에서 i-브롬화부틸과 브롬화갈륨의 1:1착물, i-C4H9Br·GaBr3가 형성된다. 이 착물형성의 instability constant K는 다음 식으로 계산된다. i-C4H9Br·GaBr3 ↔ C4H9Br + 1/2Ga2Br6. 따라서 브로화갈륨과 각 브롬화알킬간의 착물형성의 안정도를 비교검토한 결과 이들 브롬화알킬의 carbonium ion의 안정도와 직접적인 관계가 있다고 본다.

The solubility of i-butyl bromide in nitrobenzene have been measured at 19, 25 and 40℃ in the presence and absence of gallium bromide. In the presence of gallium bromide, 1 : 1 complex, i-C4H9Br·GaBr3 is formed in the solution. The instability constant K of the complex formation was evaluated from the following equilibrium equation. i-C4H9Br·GaBr3 ↔ C4H9Br + 1/2Ga2Br6. From these result, it seems that the stabilities of the complex formation, gallium bromide with alkyl bromide, are directly related with those of the carbonium ions of alkyl bromide.

208 - 213
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