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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 14, Number 1
JKCSEZ 14(1)
February 20, 1970 

Studies on the Crystal Structure of Benzidine Perchlorate by X-ray Diffraction Method (Ⅰ) Relation between the Space Group and the Composition of the Diamine Salt Crystal

X-선 회절법을 이용한 벤지딘과염소산염의 결정구조에 관한 연구 (Ⅰ) 공간군과 Diamine 염 결정의 조성과 관계
Chung Hoe Koo, Yul Sa Kong, Man Hyong Kang, Hyun So Shin

구정회, 사공열, 강만형, 신현소
In those six kinds of diamine salt crystal of which their structures had already been determined up to date, commonly one molecule of diamine and two molecules of acid were combined; although the crystal of benzidine perchlorate, only one molecule each of benzidine and perchloric acid were combined. At the case of benzidine perchlorate, one molecule acts as the role of two molecules by coincidence of the center of symmetry point of both the lattice and molecule, and perchlorate ion is locating symmetrically between two -NH2 groups of different benzidine molecule, therefore benzidine and acid could be combined together with 1:1 by mole ratio. When forming the salt with diamine and acid, the combining mole ratio would be determined in accordance with the relationship between the symmetry element that presented by the space group and the symmetry element of diamine salt melecule.
119 - 122
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