Acta Chimica Sinica ›› 1995, Vol. 53 ›› Issue (1): 50-56. Previous Articles     Next Articles

Original Articles

三水和硝酸N,N,N"'-四[(1'-苄基-2'-苯并咪唑)甲基]-1,2- 环已二胺合Zn(Ⅱ)的晶体结构和非等温热分解反应动力学

李晓燕;孙宏建;杨兆荷   

  1. 山东大学化学系;山东大学晶体材料研究所
  • 出版日期:1995-01-15 发布日期:1995-01-15

Crytal structure and non-isothermal kineties of thermal decomposition of N,N,N',N'-tetrakis[(1'-benzyl-2'-benzimidazolyl)methyl] -1,2-cyclohexanediamine zinc(Ⅱ)nitrate trihydrate

LI XIAOYAN;SUN HONGJIAN;YANG ZHAOHE   

  • Online:1995-01-15 Published:1995-01-15

Synthesis and crystal structure of titled Zn(II) coordination compound, [Zn(NBOCTB)](NO3)2.3H2O are reported. The complex belongs to triclinic system, space group P1 with a = 1.4146(2), b = 1.5407(3), c = 1.8518(4) nm; a = 62.09(2), b = 72.46(2), g = 68.60(1)? V = 3.2783(9)nm3, Mr = 1238.68, Z = 2, Dx = 1.25 g/cm3, m = 4.43 cm-1, F(000) = 1288. Non-isothermal kinetics of thermal decomposition of the complex was also studied with Achar method and Coats-Redfern method by TG and DTG techniques. The kinetic equation for the first step can be expressed as: da/dt = Ae-E/RT. (3/2).(1-a).[-ln(1-a)]1/3, the mechanism is "Coring and Growth" (n = 1.5): while for the second step, da/dt = Ae-E/RT.(1-a)2, corresponding to the mechanism of the second-order chem. reaction. The math. expressions of the kinetic compensation effect for the two steps are found to be: lnA = 0.3739E-3.321, and InA = 0.2100E-3.690, resp.

Key words: CRYSTAL STRUCTURE DETERMINATION, REACTION MECHANISM, REACTION KINETICS, ZINC COMPLEX, X-RAY DIFFRACTION ANALYSIS, NITRATE, BENZIMIDAZOLE, THERMAL DECOMPOSITION

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