以哌嗪为模板剂的二维层状硫酸铈[C_4N_2H_(12)]_3[Ce_2(SO_4)_6(H_2O)_2]·H_2O的水热合成与晶体结构表征

Hydrothermal Synthesis and Structure Characterization of a Piperazine-templated Two-dimenisional Cerium Sulfate,[C_4N_2H_(12)]_3[Ce_2(SO_4)_6(H_2O)_2]·H_2O

以哌嗪为模板剂,在水热条件下合成了一个新的具有二维拓展骨架结构的稀土硫酸盐[C4N2H12]3[Ce2(SO4)6(H2O)2]·H2O,并对其进行了结构表征和热分析.单晶结构解析结果表明,该化合物晶体属于单斜晶系,P21/c空间群,晶体学参数a=0·66335(10)nm,b=2·8088(4)nm,c=1·02212(15)nm,β=96·160(2)°,V=1·8935(5)nm3R1=0·0466,wR2=0·1226.该化合物由[—Ce—S3—Ce—S1—Ce—S3—Ce—S1—]八元环连接形成二维层状结构,无机层间通过氢键连接成三维无限结构.

A cerium sulfate hydrate, [ C4N2H12 ] 3 [ Ce2（SO4 ）6 （H2O）2 ]·H2 O, was synthesized via the hydrothermal method with piperazine as a template and characterized by single-crystal X-ray diffraction. The compound crystallizes in monoclinic system, space group P21/c with cell parameters a =0. 66335（10） nm,b =2. 8088（4） nm, c = 1. 02212（15） nm, β =96. 160（2）°, final R indices [I 〉 2σ（1） ] R, =0. 0466 and wR2 = 0. 1226. The compound exhibits a corrugated layer structure, which is constructed from inorganic anionic sheets of cerium sulfates with diprotonated piperazine cations and water molecules locating between the layers. An eight-membered ring is created in the layer with a diprotonated piperazine molecule locating in it. The thermal behavior of the compound was also examined.