Korean Journal of Crystallography (한국결정학회지)

Korean Crystallographic Association (한국결정학회)
권호 표지

Structure of Cholesteryl Hemisuccinate

Cholesteryl Hemisuccinate의 구조

  • Published : 2004.01.01
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Abstract

The crystal structure of cholesteryl hemisuccinate ($C_{31}H_{50}O_4$) was investigated by X-ray diffraction method. The cholesterol fragment of the title compound were in good agreement with those for related cholesterol derivatives. The unit cell contains four cholesteryl hemisuccinate molecules that are not related by crystal symmetry and have their tetracyclic system almost parellel to each other. There are two pairs of hydrogen-bonded dimer between A and D molecules and B and C molecules. These two hydrogen-bonded dimers are parallel to the c-axis, and are closely packed.

Cholesteryl hemisuccinate($C_{31}H_{50}O_4$)의 구조를 X-선 회절법으로 연구하였다. 이 화합물의 결정의 공간군은 $P2_12_12_1$이며, 단위세포내에 결정학적으로 서로 독립적인 4개의 분자들로 구성되어있다. 이들 분자들은 두 개의 분자들이 수소결합으로 결합된 hydrogen-bonded dimer 두쌍을 만들며, 결정내에서 단단히 결합되어있다. 두쌍의 hydrogen bonded dimer들은 각 각 b = 0.0과 b = 0.25 부근에서 head to head 배열을 이루며, c-축에 나란하게 배열되어 있다. 수소결합의 영향으로 결정의 녹는점이 $180^{\circ}C$으로 높다

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