Synthesis, Crystal Structure and Circular Dichroism Property of a Homochiral Ni-MOF Based on D-Camphorate-Derived Enantiopure Ligand

IF 0.4 4区化学 Q4 CRYSTALLOGRAPHY Journal of Chemical Crystallography Pub Date : 2024-05-08 DOI:10.1007/s10870-024-01017-2

Mengying Liu, Mingyuan Lei, Yang Shi, Qingfu Zhang

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Abstract

A homochiral metal-organic framework, [Ni(D-L)(py)₂(H₂O)₂]_n (1) [D-H₂L = 4,4′-[[(1R,3S)-1,2,2-trimethylcyclopentane-1,3-dicarbonyl]bis-(azanediyl)]dibenzoic acid], has been successfully synthesized based on D-camphorate-derived enantiopure ligand. 1 was characterized by single-crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD), Fourier transform infrared spectral analysis (FTIR), thermogravimetric analysis (TGA) and the circular dichroism (CD) spectrum. The experimental results show that 1 features a homochiral triple helix and is formed a 3D supramolecular framework by supramolecular interactions. In addition, the circular dichroism (CD) spectrum verifies the chirality introduction from the ligand to crystal. The successful preparation of the homochiral Ni-MOF provides more possibilities of employing the chiral ligand to produce various chiral MOFs.

Graphical Abstract

A homochiral Ni(II)-MOF 1 was prepared by using D-camphorate-derived enantiopure ligand under solvothermal condition, in which the chirality of 1 was confirmed by the circular dichroism (CD) spectrum

Abstract Image

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基于樟脑衍生的对映体纯配体的同手性 Ni-MOF 的合成、晶体结构和圆二色性

以 D-樟脑衍生的不纯配体为基础，成功合成了同手性金属有机框架[Ni(D-L)(py)2(H2O)2]n (1)[D-H2L = 4,4′-[[(1R,3S)-1,2,2-三甲基环戊烷-1,3-二羰基]双(偶氮二基)]二苯甲酸]。通过单晶 X 射线衍射 (SCXRD)、粉末 X 射线衍射 (PXRD)、傅立叶变换红外光谱分析 (FTIR)、热重分析 (TGA) 和圆二色性光谱 (CD) 对 1 进行了表征。实验结果表明，1 具有同手性三螺旋结构，并通过超分子相互作用形成了三维超分子框架。此外，圆二色性（CD）光谱验证了从配体到晶体的手性引入。同手性 Ni-MOF 的成功制备为利用手性配体制备各种手性 MOF 提供了更多可能性。

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来源期刊

Journal of Chemical Crystallography 化学-光谱学

CiteScore

1.50

自引率

12.50%

发文量

审稿时长

6.3 months

期刊介绍： Journal of Chemical Crystallography is an international and interdisciplinary publication dedicated to the rapid dissemination of research results in the general areas of crystallography and spectroscopy. Timely research reports detail topics in crystal chemistry and physics and their relation to problems of molecular structure; structural studies of solids, liquids, gases, and solutions involving spectroscopic, spectrometric, X-ray, and electron and neutron diffraction; and theoretical studies.