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基于不同晶体颜色和形态的快照观察对三种铜（II）配合物进行结构转换。

Structural conversion of three copper(ii) complexes with snapshot observations based on the different crystal colours and morphology.

作者信息

Su Hao, Li Zhongkui, Tan Junrui, Ma Hongwei, Yan Li, Li Hui

机构信息

Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 P. R. China

Analytical and Testing Center, Beijing Institute of Technology Beijing 102488 China.

出版信息

RSC Adv. 2020 Nov 26;10(70):42964-42970. doi: 10.1039/d0ra07231a. eCollection 2020 Nov 23.

DOI:10.1039/d0ra07231a
PMID:35514932
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9058286/
Abstract

Three novel Cu(ii) complexes [Cu(L)(MeOH)] (1), [Cu(L)(HO)] (2) and [CuL(HO)] (3) (L = ()-2-((2-hydroxy-4-methoxybenzylidene)amino)acetic acid) have been obtained in different time scales of reaction processing. Complexes 1 and 2 are kinetically controlled products and 3 is a thermodynamically stable product. Single crystal X-ray diffraction analyses revealed that 1 and 2 are binuclear complexes except for different coordination solvents. 3 is a mononuclear complex. Complex 1 is mainly obtained in methanol solution, while 2 and 3 are stable in aqueous solvents. Based on the understanding of crystal structures of the three complexes, reversibly transforming crystal 2 to crystal 1 at room temperature has been realised, which has been confirmed by the change of colours and morphology measured by SEM. The research work is very important for controllable synthesis of coordination complexes.

摘要

通过不同反应时间尺度得到了三种新型铜（II）配合物[Cu(L)(MeOH)] (1)、[Cu(L)(HO)] (2)和[CuL(HO)] (3)（L = ()-2-((2-羟基-4-甲氧基亚苄基)氨基)乙酸）。配合物1和2是动力学控制产物，3是热力学稳定产物。单晶X射线衍射分析表明，除配位溶剂不同外，1和2是双核配合物，3是单核配合物。配合物1主要在甲醇溶液中得到，而2和3在水性溶剂中稳定。基于对三种配合物晶体结构的认识，实现了在室温下将晶体2可逆地转变为晶体1，这已通过扫描电子显微镜测量的颜色和形态变化得到证实。该研究工作对于配位配合物的可控合成非常重要

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/13ff34520150/d0ra07231a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/f7c09757b8c5/d0ra07231a-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/75e25f5361e6/d0ra07231a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/a5716dc56636/d0ra07231a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/d05ff24b8973/d0ra07231a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/7c52c7eeedc5/d0ra07231a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/13ff34520150/d0ra07231a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/f7c09757b8c5/d0ra07231a-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/75e25f5361e6/d0ra07231a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/a5716dc56636/d0ra07231a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/d05ff24b8973/d0ra07231a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/7c52c7eeedc5/d0ra07231a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3bdf/9058286/13ff34520150/d0ra07231a-f5.jpg

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