Syntheses, Crystal Structures and Fluorescence Properties of Four Coordination Polymers Based on Enantiomeric 2-(4-Carboxyphenyl)-4,5-dihydrothiazole-4-carboxylic Acid Ligands  

作　　者：LIU Lu Malik Abaid Ullah SHU Mou-Hai 刘路;Malik Abaid Ullah;舒谋海(School of Chemistry and Chemical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]School of Chemistry and Chemical Engineering,Shanghai Jiaotong University,Shanghai 200240,China

出　　处：《Chinese Journal of Structural Chemistry》2020年第3期567-578,380,共13页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(No.21271129)。

摘　　要：A pair of enatiomerically pure ligands,(R-)/(S-)2-(4-carboxyphenyl)-4,5-dihydrothiazole-4-carboxylic acid(H2L^R & H2L^S), have been synthesized by the reactions of 4-cyanobenzoic acid with L-and D-cysteine, respectively. Four coordination polymers have been prepared from the ligands and structurally determined by single-crystal X-ray diffraction analysis. Complexes 1 R and 1 S([NiL(Py)(H2 O)]×H2 O, for 1 R, L =(L^R)^(2-);for 1 S, L =(L^S)^(2-)) exhibit chiral helical one-dimensional chains, and complexes 2 R and 2 S({[ZnL2(H2 O)3]×CH3 CN}n, for 2 R L =(L^R)^(2-), for 2 S L =(LS)^(2-)) are two-dimensional sheets. Luminescent and chir-optical properties have been investigated and compared with the free ligands. The complexes have blue-shift in luminescence spectrum compared with the free ligands.

关 键 词：COORDINATION polymer crystal structure CHIRAL LIGAND FLUORESCENCE 

分 类 号：O641.4[理学—物理化学]