摘要
以异烟酸为配体合成了Cd(Ⅱ)、Co(Ⅱ)、Cu(Ⅱ)3种配合物,用X-射线单晶衍射研究了其结构,3种配合物具有类似的六配位结构,由于Jahn-Teller效应使Cu(Ⅱ)的配合物的结构为一伸长的八面体;3个配合物的配位原子均为4个水分子的氧原子和两个异烟酸根的氮原子,羧基仅参与形成氢键。对配合物的热稳定性进行了研究,并对Cd(Ⅱ)配合物非等温热分解动力学方程和动力学参数进行了拟合,结果表明动力学补偿效应方程与数据拟合方法无关。
The Cd（Ⅱ）,Co（Ⅱ）,Cu（Ⅱ） complexes with isonicotinate acid were synthesized and characterized by X-ray single-crystal diffraction.The complexes all had six-coordinated structure,and Cu（Ⅱ） complexes had elongational octahedral structure in connection with Jahn-Teller effect.The coordinated atoms of three complexes were all four oxygen atoms from water molecules and two nitrogen atoms from isonicotinate ions.Carboxyl group only formed hydrogen bond with water molecules.The thermostability of the complexes were studied.The data of Cd（Ⅱ） complex were fitted by Achar method and Coat-redfern method to obtain the kinetic function,parameters of nonisothermal thermal decomposition.The results showed that the compensation effect equation had no relationship with the fitted methods.
出处
《光谱实验室》
CAS
CSCD
2012年第2期962-967,共6页
Chinese Journal of Spectroscopy Laboratory
基金
安徽工程大学应用化学重点学科资助和安徽工程大学青年科研基金(2009YQ031)
关键词
异烟酸
晶体结构
热分解动力学
Isonicotinic Acid
Crystal Structure
Thermal Decomposition Kinetics
