摘要
在溶剂热反应条件下,用预先合成的乳酸衍生物(R)-H_2CBA和(S)-H_2CBA分别与含氮辅助配体(E)-1,2-二(4-吡啶基)乙烯(DPEE)和1,4-二(1H-咪唑-1-基)苯(1,4-DIB)组合,制备出2对不同结构的单一手性配位聚合物[Cd_2((R)-CBA)_2(DPEE)(H_2O)_2]_n(1-D),[Cd_2((S)-CBA)_2(DPEE)(H_2O)_2]_n(1-L),[Cd((R)-CBA)(1,4-DIB)]·H_2O(2-D)和[Cd((S)-CBA)(1,4-DIB)]·H_2O(2-L).其中1-D和1-L是由梯形Cd-CBA链和DPEE配体连接成的二维框架结构;而2-D和2-L是三维超分子框架结构,包含3种不同类型的对映手性螺旋链.对上述化合物进行了粉末X射线衍射、热重分析和圆二色谱分析,并对其荧光性质进行了讨论.
Under the solvothermal reaction condition, two pairs of homochiral coordination polymers, namely [Cd2((R)-CBA)2(DPEE)(H2O)2]n(1-D),[Cd2((S)-CBA)2(DPEE)(H2O)2]n(1-L),[Cd((R)-CBA)(1,4-DIB)]·H2O(2-D)和[Cd((S)-CBA)(1,4-DIB)]·H2O(2-L). [ DPEE = ( E)- 1,2-di ( pyri- din-4-yl) ethene ; 1,4-DIB = 1,4-di ( IH-imidazol-l-yl ) benzene ; ( R ) -H2CBA = (R) -4-(1-carboxyetboxy) benzoic acid ; (S) -HE CBA = (S) -4- (1-carboxyethoxy) benzoic acid ], have been prepared from synthetic lac- tic acid derivative ligands [ (R) -H2 CBA and (S) -H2 CBA ], auxiliary ligands and Cda+ ions. Among these com- plexes, 1-D and 1-L have ladder-like Cd-CBA2- chains, which are further linked by DPEE ligands to form a 2D framework. Complexes 2-D and 2-L feature three-dimensional supramolecular structure with hydrogen bonds, containing three kinds of homochiral helical chains. Moreover, the thermal stabilities, solid-state circu- lar diehroism(CD) and photoluminescent properties of the complexes were also investigated.
作者
徐中轩
赵光练
罗乐
龙振敏
XU Zhongxuan ZHAO Guanglian LUO Le LONG Zhenmin(School of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi 563002, Chin)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2017年第1期12-19,共8页
Chemical Journal of Chinese Universities
基金
贵州省自然科学基金(批准号:LKZS201228)
贵州省教育厅"125"重大专项基金(批准号:2012015)
遵义师范学院博士基金(批准号:2012BSJJ12)资助~~
关键词
乳酸衍生物
单一手性
配位聚合物
螺旋链
Semirigid lactic acid derivative
Homochiral
Coordination polymer
Helical chain