Choi Jong-Ha, Suzuki Takayoshi, Kaizaki Sumio
Department of Chemistry, Andong National University, Andong 760-749, South Korea.
Acta Crystallogr C. 2002 Nov;58(Pt 11):m539-41. doi: 10.1107/s0108270102018231. Epub 2002 Oct 22.
In the title compound, CrBr(2)(C(5)H(14)N(2))(2)Br(2).HClO(4).6H(2)O, there are two independent Cr(III) complex cations which are conformational isomers of each other. The Cr atoms lie respectively on a center of symmetry and on a mirror plane and have octahedral environments, coordinated by the N atoms of two 2,2-dimethylpropane-1,3-diamine ligands and by two Br atoms in trans positions. The Cr-N and Cr-Br bond lengths are in the ranges 2.078 (3)-2.089 (3) and 2.4495 (9)-2.5017 (9) A, respectively. The crystal structure consists of two Cr(III) complex cations, two Br(-) anions, a (ClO(4))(-) anion and an H(13)O(6) hydrogen-bonded cluster cation.
在标题化合物[CrBr₂(C₅H₁₄N₂)₂]₂Br₂·HClO₄·6H₂O中，存在两个相互为构象异构体的独立Cr(III)络合阳离子。Cr原子分别位于对称中心和镜面上，具有八面体环境，由两个2,2 - 二甲基丙烷 - 1,3 - 二胺配体的N原子和处于反式位置的两个Br原子配位。Cr - N和Cr - Br键长分别在2.078(3) - 2.089(3)和2.4495(9) - 2.5017(9) Å范围内。晶体结构由两个Cr(III)络合阳离子、两个Br⁻阴离子、一个(ClO₄)⁻阴离子和一个[H₁₃O₆]⁺氢键簇阳离子组成。
