摘要
目的研究含手性基团的β-二酮及其铜(Ⅱ)配合物的合成及其性质.方法合成三种新的含手性碳原子的β-二酮,1-对辛(壬、癸)氧基联苯基-3-3′-甲基戊基-1,3-丙二酮,及它们的铜(Ⅱ)配合物.确定化学结构后,通过在偏光显微镜下进行相变观察以及作DSC分析,研究β-二酮及其铜(Ⅱ)配合物的相态变化.结果三种β-二酮配体均呈现双变S相液晶,而它们的铜(Ⅱ)配合物却没有表现出液晶性质.结论随着1-对烷氧基联苯基-3-3′-甲戊基-1,3-丙二酮配体的3位基团增大,它们的铜配合物的液晶性质消失.
Aim To investigate the synthesis and properties of βdiketones and their copper(Ⅱ) complexes containing chiral substituents Methods Three new βdiketones (+)1(pnalkoxylbiphenyl)33′methylpentyl1,3dione,nalkoxyl:C8H 17 O,C9H 19 O,C 10 H 21 O and their copper (Ⅱ) complexes were prepared Their chemical stuctures were characterized and thermal behaviours were studied by polarizing microscope and differential scanning calorimetry Results The three ligands exhibit enantiotropic S mesophase and their copper (Ⅱ) complexes have no mesophase Conclusion The enlarged 33′methyl pentyl of the βdiketones results in the loss of mesophases of their Cu(Ⅱ) complexes
出处
《北京理工大学学报》
EI
CAS
CSCD
1998年第3期393-396,共4页
Transactions of Beijing Institute of Technology