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 авг 2021
Accepted
05 сен 2021
First published
08 сен 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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