The Effect of Sterically Active Ligand Substituents on Gas Adsorption within a Family of 3D Zn-Based Coordination Polymers

Brendan F Abrahams; Ravichandar Babarao; A David Dharma; Jessica L Holmes; Timothy A Hudson; Helen E Maynard-Casely; Forbes McGain; Richard Robson; Keith F White

Journal article

The Effect of Sterically Active Ligand Substituents on Gas Adsorption within a Family of 3D Zn-Based Coordination Polymers

Brendan F Abrahams, Ravichandar Babarao, A David Dharma, Jessica L Holmes, Timothy A Hudson, Helen E Maynard-Casely, Forbes McGain, Richard Robson, Keith F White

Inorganic Chemistry | American Chemical Society | Published : 2020

DOI: 10.1021/acs.inorgchem.0c00684

Abstract

An investigation of the adsorption properties of two structurally related, 3D coordination polymers of composition Zn(2-Mehba) and Zn(2,6-Me2hba) (2-Mehba = the dianion of 2-methyl-4-hydroxybenzoic acid and 2,6-Me2hba = the dianion of 2,6-dimethyl-4-hydroxybenzoic acid) is presented. A common feature of these structures are parallel channels that are able to accommodate appropriately sized guest molecules. The structures differ with respect to the steric congestion within the channels arising from methyl groups appended to the bridging ligands of the network. The host network, Zn(2-Mehba), is able to take up appreciable quantities of H2 (77 K) and CO2 and CH4 (298 K) in a reversible manner. ..

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University of Melbourne Researchers

Brendan Abrahams Author

Forbes McGain Author

Richard Robson Author

Related Projects (1)

"Coordination Polymers and Oligomers and Labyrinthine Molecular Solids as Materials for the Sorption of Gases/Vapours, with Emphasis on Hydrogen"

The work will afford new types of gas sorbing solids, which may find practical uses in the separation and storage of gases and in catalysis...

Grants

Awarded by Australian Research Council

Funding Acknowledgements

Financial support from Western Health, The Australian and New Zealand Society of Anaesthetists, and the Australian Research Council (DP0663872) is gratefully acknowledged. Part of the research reported was undertaken at the powder diffraction beamline, proposal ID M10760 at the Australian Synchrotron (ANSTO), Victoria, Australia. R.B. acknowledges the Australian Research Council (DE160100987) for financial support and Alexander von Humboldt Foundation for the visiting research fellowship and the National Computing Infrastructure (NCI) and Pawsey supercomputing facilities for computational support.