A Porous Framework Polymer Based on a Zinc(II) 4,4‘-Bipyridine-2,6,2‘,6‘-tetracarboxylate:  Synthesis, Structure, and “Zeolite-Like” Behaviors

Lin, Xiang; Blake, Alexander J.; Wilson, Claire; Sun, Xue Zhong; Champness, Neil R.; George, Michael W.; Hubberstey, Peter; Mokaya, Robert; Schr�der, Martin

Abstract

The robust metal-organic framework compound {[Zn2(L)] ·4H2O}∞ I has been synthesized by hydrothermal reaction of ZnCl2 and 4,4′-bipyridine-2,6, 2′,6′-tetracarboxylic acid (H4L). Compound I crystallizes in a chiral space group, P42212, with the chirality generated by the helical chains of hydrogen-bonded guest water molecules rather than by the coordination framework. Removal of guest water molecules from the crystal affords the porous material, [Zn2(L)]∞ (II), which has very high thermal stability and is chemically inert. The N 2 isotherm of II at 77 K suggests a uniform porous structure with a BET surface area of 312.7 m2/g and a remarkably strong interaction with N2 molecules (βE0 = 29.6 kJ mol-1). II also exhibits significant gas storage capacities of 1.08 wt % for H 2 at 4 bar and 77 K and 3.14 wt % (44.0 cm3/g, 67 v/v) for methane at 9 Bar at 298 K. The adsorption behavior of II toward organic solvent vapors has also been studied, and isotherms reveal that for different solvent vapors adsorption is dominated by two types of processes, absorbate-absorbate or absorbate-absorbent interactions. The adsorption and desorption kinetic processes in II are determined mainly by the molecular size of the guest species and their interaction with the host. © 2006 American Chemical Society.

Citation

Lin, X., Blake, A. J., Wilson, C., Sun, X. Z., Champness, N. R., George, M. W., Hubberstey, P., Mokaya, R., & Schröder, M. (2006). A Porous Framework Polymer Based on a Zinc(II) 4,4‘-Bipyridine-2,6,2‘,6‘-tetracarboxylate:  Synthesis, Structure, and “Zeolite-Like” Behaviors. Journal of the American Chemical Society, 128(33), 10745-10753. https://doi.org/10.1021/ja060946u

• Journal Article Type: Article
• Online Publication Date: Jul 29, 2006
• Publication Date: Aug 1, 2006
• Deposit Date: Apr 3, 2022
• Journal: Journal of the American Chemical Society
• Print ISSN: 0002-7863
• Electronic ISSN: 1520-5126
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 128
• Issue: 33
• Pages: 10745-10753
• DOI: https://doi.org/10.1021/ja060946u
• Public URL: https://nottingham-repository.worktribe.com/output/3109385
• Publisher URL: https://pubs.acs.org/doi/10.1021/ja060946u