摘要
本文合成了铬（Ⅲ）的一个新的双核配合物Ｃｒ２（Ｎｉｃａ）４Ｃｌ５（ＯＨ）（Ｈ２Ｏ）６（Ｎｉｃａ表示烟酰胺．通过元素分析、摩尔电导、红外光谱、热重．对该配合物进行了表征，表明烟酰胺以吡啶氮与铬（Ⅲ）配位．文章对该配合物进行了热分解脱水非等温动力学研究，运用Ａｃｈａｒ法与Ｃｏａｔｓ—Ｒｅｄｆｅｒｎ法，推断出该热分解脱水反应为二级反应．其动力学方程为ｄα／ｄｔ＝Ａｃ（－Ｅ／ＲＴ）（１－α）２，动力学补偿效应表达式为ＩｎＡ＝０．２９９２Ｅ－１０．５６８２．
A new dinuclcar or(Ⅲ)-Cr(Ⅲ) complex Cr2(Nica)4cl,(OH)·(H2O)6(Nica denotes nicotinamide) was prepared, its component was assigned on the basis of clement analysis, molar conductance, IR, UV and TG. Pyridine ring nitrogen-bond chromium(Ⅲ) complex has been Observed in the ligand of Nica. The kinetics of thermal dehydration was studied under non-isothermal condition. The kinctic data were analyzed by means of the Acbar method and the Coats-Redfern method. The results show that thermal dehydration reaction at first step is a second order reaction. The kinetic equation can be expressed as: dα/ dt= Ae(-B/AT)·(1-α)2.The mathematical expression of the kinetic compensation effect is found to be:InA = 0.2992E-0.5682.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1995年第2期147-151,共5页
Chinese Journal of Inorganic Chemistry
关键词
铬
配合物
烟酰胺
热分解
非等温动力学
Cr(Ⅲ) complex nicotinamide thermal decompostion non-isothermal kinetics
