Studies on the Halogen Substituted β-Amino Acids and Their Cu（II） Coordination Complexes in Crystallography  

作　　者：ZHENG Chunying QIU Qiming HAO Liang LI Hui 

机构地区：[1]Key Laboratory of Cluster Science, Ministry of Education, Beo'ing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beo'ing Institute of Technology, Beijing 100081, P. R. China

出　　处：《Chemical Research in Chinese Universities》2016年第1期1-7,共7页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（Nos.21071018, 21271026）.

摘　　要：Halogen substituted β-amino acids, D,L-3-amino-3-（4-fluoro）phenylpropionic acid（D,L-HL1, 1） and D,L-3-amino-3-（4-bromo）phenylpropionic acid（D,L-HL2, 2）, as well as their Cu（II） coordination complexes [Cu（L1）2（CH3OH）2].2CH3OH（3） and [Cu（L2）2（CH3OH）2]-2CHaOH（4） were investigated and their single crystal structures were discussed in details. Supramolecular helical chains were found in β-amino acids 1 and 2 while there was no helix in their coordination complexes 3 and 4. The formation of supramolecular helixes could be due to the hydrogen bonds between terminal -NH3＋ and adjacent -COO- in β-amino acids 1 and 2. While, this kind of hydrogen bonds could not be observed in their Cu（II） coordination complexes 3 and 4, in which central-symmetrical dimers could be formed via coplanar coordinated bonds（N-Cu-O） between -NH2 and -COO-.Halogen substituted β-amino acids, D,L-3-amino-3-（4-fluoro）phenylpropionic acid（D,L-HL1, 1） and D,L-3-amino-3-（4-bromo）phenylpropionic acid（D,L-HL2, 2）, as well as their Cu（II） coordination complexes [Cu（L1）2（CH3OH）2].2CH3OH（3） and [Cu（L2）2（CH3OH）2]-2CHaOH（4） were investigated and their single crystal structures were discussed in details. Supramolecular helical chains were found in β-amino acids 1 and 2 while there was no helix in their coordination complexes 3 and 4. The formation of supramolecular helixes could be due to the hydrogen bonds between terminal -NH3＋ and adjacent -COO- in β-amino acids 1 and 2. While, this kind of hydrogen bonds could not be observed in their Cu（II） coordination complexes 3 and 4, in which central-symmetrical dimers could be formed via coplanar coordinated bonds（N-Cu-O） between -NH2 and -COO-.

关 键 词：β-Amino acid Copper H-BONDING HALOGEN Crystal structure 

分 类 号：O614.121[理学—无机化学] O629.711[理学—化学]