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本文报道标题Zn(Ⅱ)配合物:[Zn(NBOCTB)](NO_3)_2·3H_2O的制备,晶体结构及热分解动力学.该晶体属三斜晶系,空间群p(?),a=1.4146(2),b=1.5407(3),c=1.8518(4)nm;α=62.09(2),β=72.46(2),γ=68.60(1)°.并对配合物第一和第二步热分解反应进行了非等温动力学研究.运用Achar法与Coats—Redfern法对非等温动力学数据进行分析,推断第一步脱水过程为成核和生长机理,其动力学方程为:dα/dt=Ae~(-E/RT),3/2(1-α)·[-In(1-α)]~(1/3);动力学补偿效应表达式为:InA=0.3739E-3.321.第二步分解过程为二级化学反应,其动力学方程为:dα/dt=Ae~(-E/RT)(1-α)~2;动力学补偿效应表达式为:InA=0.2100E-3.690.
This paper reports the preparation, crystal structure and thermal decomposition kinetics of the title Zn (Ⅱ) complex: [Zn (NBOCTB)] (NO 3) 2 · 3H 2 O. The crystal belongs to triclinic system with space group p Α = 62.09 (2), β = 72.46 (2), γ = 68.60 (1) °. And the first and the second complexes The two-step thermal decomposition reaction was studied by non-isothermal kinetics. The non-isothermal kinetic data were analyzed by Achar method and Coats-Redfern method. The first step dehydration process was nucleation and growth mechanism. The kinetic equation was: dα / dt = Ae ~ (-E / RT), 3/2 (1-α) · [-In (1- α)] ~ (1/3); The kinetic compensation effect is: InA = 0.3739E- 3.321. The second step decomposition process is a second-order chemical reaction whose kinetic equation is as follows: dα / dt = Ae ~ (-E / RT) (1-α) ~ 2; The kinetic compensation effect is expressed as: InA = 0.2100 E-3.690.