Hydrothermal Synthesis,Crystal Structure and Thermal Property of a Coordination Polymer Constructed by Ce(Ⅲ) and Succinate Ions

A new three-dimensional coordination polymer [Ce_2(C_4H_4O_4)_3(H_2O)_2]_n·3.2 nH_2 O, constructed by Ce(Ⅲ) ion and succinate ion and lattice water molecules has been synthesized under hydrothermal conditions. It crystallizes in triclinic system, space group P1 with a = 7.8865(6), b = 12.0260(8), c = 12.2598(9) ?, α = 112.456(2)o, β = 90.046(2)o, γ = 100.423(2)o, Mr = 722.14, V = 1053.73(13) ?~3, Z = 2, Dc = 2.276 g/cm~3, μ = 4.35/mm, F(000) = 696, GOF = 1.029, R = 0.0203 and w R = 0.0570. The asymmetric unit contains two Ce~(3+) cations and both of them are nine-coordinated and their coordination geometries can be described as two distorted monocapped square antiprisms. In the title compound, a three-dimensional coordination network with one-dimensional hexagon honeycomb-like channels along the a axis is generated. TG measurement has been carried out, and its result analysis along with the powder XRD determination indicates the residue to be CeO_2.     

环戊并二噻吩衍生物的合成及其应用

环戊并二噻吩衍生物作为一类具有刚性平面的类芴骨架结构的分子, 其光电材料衍生物由于具有带隙低、电导率高和良好的电荷传输性能等优点在塑料电子领域有着广泛的应用. 同时由于其易于进行结构修饰, 能够方便、快捷地引入各种功能基团, 可拓展合成多种衍生物. 依据环戊并二噻吩上噻吩S原子的位置不同, 可以将其分为6种构造异构体. 在这些构造异构体中, 目前关于4H-环戊[2,1-b:3,4-b']二噻吩衍生物的研究报道较多. 作者对4H-环戊[2,1-b:3,4-b']二噻吩衍生物的合成、性质及其在有机太阳能电池(OSCs)、有机场效应晶体管(OFETs)、有机发光二极管(OLEDs)等领域的研究进展进行了全面综述, 并对其有机半导体的格子化学进行了展望.