Issue 41, 2021

Solvent-controlled metal coordination polymers of Co(ii) with different topological structures and properties

Abstract

Three new Co(II) coordination polymers {[Co(TTPA)·(H2O)2]·H2O}n (Co-1), {[Co3(TTPA)3(H2O)2]·4DMSO}n (Co-2), and {[Co(TTPA)·(H2TTPA)]·2DMSO}n (Co-3) were successfully synthesized based on a multidentate bridging organic ligand 2,5-bis-(1,2,4-triazol-1-yl)-terephthalic acid (H2TTPA) under solvent-controlled thermal reaction conditions. Single-crystal X-ray diffraction studies show that complex Co-1 has a 4,4-linked two-dimensional layered structure, which is formed in a H2O–DMF–methanol mixed solvent. Co-2 displays a novel complicated topology—a 4,4,5,6-c tetranodal 3D framework with 1D channels along the a direction and is obtained under the condition of an equal volume ratio of DMSO and methanol as a solvent. Co-3 presents another 3D porous framework with a 4,6-dinodal 3D framework with a pore volume of 36.3% and is synthesized under the volume ratio of DMSO to methanol of 3 : 1. In addition, the static and/or dynamic magnetic properties of the three polymers were determined. The microporous MOF Co-2 also underwent gas sorption measurements.

Graphical abstract: Solvent-controlled metal coordination polymers of Co(ii) with different topological structures and properties

Supplementary files

Article information

Article type
Paper
Submitted
15 ဩ 2021
Accepted
05 စက် 2021
First published
08 စက် 2021

CrystEngComm, 2021,23, 7253-7261

Solvent-controlled metal coordination polymers of Co(II) with different topological structures and properties

Z. L. Ma, M. C. Wang, L. Tian and Z. Y. Liu, CrystEngComm, 2021, 23, 7253 DOI: 10.1039/D1CE01093J

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