4-(二乙氨基)水杨醛席夫碱的合成、光谱性质和热稳定性及量化计算  

Synthesis,spectral properties,thermostability and quantum chemistry calculation of 4-diethylamino salicylidene Schiff bases

作　　者：解庆范[1] 林长新 刘春霞[1] 卢慧强[1] 吴晓玲[1] 

机构地区：[1]泉州师范学院化学与生命科学学院,福建泉州362000

出　　处：《化学研究》2016年第1期88-91,共4页Chemical Research

基　　金：福建省大学生创新创业训练计划项目(201410399048)

摘　　要：合成了两种酰腙类席夫碱4-(二乙氨基)水杨醛噻吩-2-甲酰腙(H_2L^1)和4-(二乙氨基)水杨醛异烟酰腙一水合物(H_2L^2·H_2O),利用元素分析、IR光谱、UV光谱和FL光谱及热重分析对其进行了表征.实验结果表明,两种化合物在可见光区均可产生荧光,最大发射峰波长分别为504和525nm.热分解温度分别为254和278℃.用Gaussian 09程序包对H_2L^1进行了量化计算,结果表明,该化合物的水杨基和酰腙基是金属离子很好的配位点.Two acylhydrazone-type Schiff bases,2-thiophenecarboxylic acid（4-diethylaminosalicylidene）-hydrazide（H2L^1）and pyridine-4-carboxylic acid（4-diethylaminosalicylidene）-hydrazide monohydrate（H2L^2·H2O）,were synthesized and characterized by elemental analysis,IR,UV-vis,FL spectra and TGA.The results showed that both compounds could eradiate fluorescence with emission wavelength of 504 and 525nm respectively.They had good thermal stability with the initial decomposition temperature of 254 and 278℃,respectively.The quantum chemical calculation for H2L^1 was performed by means of Gaussian 09 program.It shows that salicyl and acylhydrazone groups of the compound are coordination sites to metal ions.

关 键 词：酰腙 席夫碱 光谱特征 

分 类 号：O625[理学—有机化学] O641[理学—化学]