Issue 31, 2020

A porous Zn(ii)-coordination polymer based on a tetracarboxylic acid exhibiting selective CO2 adsorption and iodine uptake

Abstract

A porous Zn(II)-coordination polymer, namely {[Zn28-abtc)(betib)]·DMF}n (1), was solvothermally synthesized from 3,3′,5,5′-azobenzenetetracarboxylate (abtc4−) and 1,4-bis(2-ethylimidazol-1-yl)butane (betib) ligands and {[Zn28-abtc)(betib)]·H2O}n (2) was obtained through the immersion of 1 in methanol. Compounds 1 and 2 were structurally characterized via numerous techniques. Both compounds displayed a 3D porous framework with a 3,6-connected sqc5381 net. Compound 2a obtained at 140 °C from 2 exhibited gas and iodine adsorption properties. Interestingly, the compound adsorbed selectively CO2 with the uptake capacity of 54.02 cm3 g−1 (13.26%) over N2 (5.43 cm3 g−1) and CH4 (14.53 cm3 g−1) at 273 K. The compound also adsorbed iodine with the weights of 19.99% and 30.26% in solution and vapor phases, respectively. The single crystal X-ray result and Raman spectra showed the presence of iodine units in the pores of the framework.

Graphical abstract: A porous Zn(ii)-coordination polymer based on a tetracarboxylic acid exhibiting selective CO2 adsorption and iodine uptake

Supplementary files

Article information

Article type
Paper
Submitted
25 May 2020
Accepted
08 Jul 2020
First published
08 Jul 2020

Dalton Trans., 2020,49, 10824-10831

A porous Zn(II)-coordination polymer based on a tetracarboxylic acid exhibiting selective CO2 adsorption and iodine uptake

M. Arici, T. Alp Arici, H. Demiral, M. Taş and O. Z. Yeşilel, Dalton Trans., 2020, 49, 10824 DOI: 10.1039/D0DT01875A

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