簇合物[MoS_4Cu_4(dppm)_4](NCS)_2·4(CH_3)_2CHOH的合成与晶体结构

合成了一个五核簇合物[MoS4CU4(dppm)4](NCS)2·4(CH3)2CHOH,用单晶X 射线衍射方法测得该晶体属于单斜晶系,空间群P21/a,晶胞参数:a=2 0536(2),b=1 8095(2),c=3 1951(4)nm,β=100 220(4)°,V=11 6846(23)nm3,Z=4,Dc=1 349g/cm3,μ=10 87cm-1,F(000)=4896,R=0 085,Rw=0 089。其二价簇阳离子是一个MoS4单元被一个十六原子环[-Cu-P-C-P-]4包围在中心的"主客体"结构。

金属簇合物cis-Cp~*_2Mo_2S_4Cu_2I_2·(CH_2Cl_2)_2/CH_2Cl_2溶液的热致非线性折射研究

应用脉宽为4.5 ns,波长为532 nm的激光脉冲,用Z-扫描方法研究了金属簇合物cis-Cp2Mo2S4Cu2I2.(CH2Cl2)2/CH2Cl2溶液的非线性特性。研究结果表明非线性折射主要来源于三阶光学非线性折射和非线性吸收引起的瞬态热致非线性折射。

金属簇合物[(n-Bu)_4N]_3[WS_4Ag_3X_3Br](X=Cl,Br,I)的热行为和热分解反应动力学

用TG-DTG-DTA联用技术研究了金属簇合物犤(n-Bu)4N犦3犤WS4Ag3X3Br犦(X=Cl,Br,I)在动态氮气气氛中的热行为和热性质,通过对热分解过程中各步反应中间体的元素分析跟踪,判断了相应的分解组分;并结合其物质结构进行了讨论。对各步反应进行了动力学分析,并通过活化能和反应进程的依赖关系探讨了反应的复杂性。

Non-Isothermal Kinetics of the Decomposition Reaction of Cluster [Ag_3WS_3Br](PPh_3)_3 and [Cu_3WS_3Br](PPh_3)_3

The thermal behaviors of clusters [Ag3WS3Br](PPh3)3 and [Cu3WS3Br](PPh3)3 (PPh3=triphenyl phosphine) in a nitrogen atmosphere were studied under the non-isothermal conditions by simultaneous TG-DTG-DSC and EDS techniques. The results showed that the evolution of PPh3 generally proceeded before the release of the other moiety in one or two step-mode. The mechanisms, the kinetic and the thermodynamic parameters for decomposition of PPh3 of both clusters were determined and calculated by jointly using several methods, which showed that its evolu-tion was controlled by Avrami-Erofeev equation. The results also showed that there was no new stable phase com-posed of W-Ag(Cu)-S-Br after release of organic moiety PPh3 and that CVD method was not applicable to their further processing.