Aldrich Emily P, Bussey Katherine A, Connell Jennifer R, Reinhart Erin F, Oshin Kayode D, Mercado Brandon Q, Oliver Allen G
Department of Chemistry & Physics, Saint Mary's College, Notre Dame, IN 46556, USA.
Department of Chemistry, Yale University, New Haven, CT, 06520, USA.
Acta Crystallogr E Crystallogr Commun. 2016 Jan 1;72(Pt 1):40-3. doi: 10.1107/S2056989015023348.
In the structure of the title complex salt, (Et2NH2)2[CuCl4], the asymmetric unit consists of four unique di-ethyl-ammonium cations and three unique tetra-chlorido-cuprate anions. Two of the three anions are located with their copper atoms on independent crystallographic twofold axes, while the remaining tetra-chlorido-cuprate is located at a general position of the ortho-rhom-bic space group P21212. Two of the three Cu atoms adopt a distorted square-planar/disphenoidal geometry and the third Cu atom has a regular square-planar coordination environment. The di-ethyl-ammonium cations form an extensive hydrogen-bonded network through N-H⋯Cl inter-actions with the tetra-chlorido-cuprate anions, resulting in a two-dimensional sheet-like hydrogen-bonded network parallel to the ab direction. The complex was observed to undergo a color shift from deep green at room temperature to pale yellow at temperatures above 328 K.
在标题配合物盐(Et2NH2)2[CuCl4]的结构中，不对称单元由四个独特的二乙铵阳离子和三个独特的四氯合铜酸盐阴离子组成。三个阴离子中的两个，其铜原子位于独立的晶体学二重轴上，而其余的四氯合铜酸盐位于正交空间群P21212的一般位置。三个铜原子中的两个采用扭曲的平面正方形/双楔几何构型，第三个铜原子具有规则的平面正方形配位环境。二乙铵阳离子通过与四氯合铜酸盐阴离子的N-H⋯Cl相互作用形成广泛的氢键网络，从而产生平行于ab方向的二维片状氢键网络。观察到该配合物在室温下从深绿色变为温度高于328 K时的浅黄色。
