Crystal structures of Cr2Ge2Se7(en)5
作者单位：State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences
会议名称：《中国化学会第八届全国配位化学会议》
会议日期：2017年
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
关 键 词：crystal structure en molecules
摘 要：Cr Ge Se(en) crystallize in the triclinic space group *** basic building blocks of Cr Ge Se(en) are cations[Cr(en)],anions[CrGeSe(en)]and anions[Ge Se].Cr ions are coordinated by three en molecules forming octahedral[Cr(en)] with an average Cr-N bond length of 2.07 A that is similar with Cr(en) ***[CrGeSe(en)],Cr ions are coordinated by two en molecules and two Se atoms to form slightly disordered octahedra[Cr(en) Se],while Ge ions are coordinated by four Se atoms to form tetrahedron[GeSe],an average bond length of 2.10 A for Cr-N,2.51 A for Cr-Se and 2.35 A for *** as[Cr(en) AsSe],each octahedral[Cr(en) Se]is sharing with with a tetrahedral[GeSe] to form an isolated bimetal-core cluster[CrGeSe(en)].For Cr Ge Se(en),CrCl·6 H O(1.066 g,4 mmol),Ge(4 mmol) and Se(14 mmol) were dissolved in 30 ml of *** mixture was stirred for 30 minutes to form a dark solution,which was transferred into a Teflon-lined stainless still *** reaction process was carried out under autogenous pressure at 170 ℃ for 4 *** final yellow crystals were obtained after being washed with anhydrous ethanol for several times and dried in a moisture-free desicator.