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Issue 22, 2021

Coordination-driven self-assembly of a series of dinuclear M2L2 mesocates with a bis-bidentate pyridylimine ligand

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Abstract

Four isostructural dinuclear M2L2 mesocates of the general formula [M2(NCS)4(L)2]·4.5MeOH (1M; M = Mn, Fe, Co, Zn) were constructed by using the coordination-driven self-assembly of the [M(NCS)2] precursor and the flexible bis-bidentate pyridylimine Schiff base ligand L (L = 4,4′-(1,4-phenylenebis(oxy))bis(N-(pyridin-2-ylmethylene)aniline). The centrosymmetric M2L2 mesocate forms through the side-by-side coordination of two L ligands to a pair of M(II) ions. The mesocates exhibit a reversible temperature induced desolvation–solvation behavior without losing their structural integrity. The activated 1Co, as the representative M2L2 mesocate, shows an exceptionally high MeOH vapour uptake capacity of 481.9 cm3 g−1 (68.8 wt%) at STP with good recyclability. Notably, it also exhibits CO2 adsorption with an uptake capacity of 20.2 cm3 g−1 (3.6 wt%) at room temperature and 1 bar.

Graphical abstract: Coordination-driven self-assembly of a series of dinuclear M2L2 mesocates with a bis-bidentate pyridylimine ligand

Supplementary files

Article information


Submitted
15 Jan 2021
Accepted
28 Apr 2021
First published
28 Apr 2021

Dalton Trans., 2021,50, 7736-7743
Article type
Paper

Coordination-driven self-assembly of a series of dinuclear M2L2 mesocates with a bis-bidentate pyridylimine ligand

K. Chainok, S. Jittirattanakun, C. Theppitak, S. Jiajaroen, P. Puangsing, W. Saphu, F. Kielar, W. Dungkaew, B. Rungtaweevoranit and M. Sukwattanasinitt, Dalton Trans., 2021, 50, 7736 DOI: 10.1039/D1DT00146A

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