Supplementary material from "Gas adsorption and structural diversity in a family of Cu(II) Pyridyl-isophthalate metal-organic framework materials"

  • Jamie A. Gould (Creator)
  • Harprit Singh Athwal (Creator)
  • Alexander J. Blake (Creator)
  • William Lewis (Creator)
  • Peter Hubberstey (Creator)
  • Neil R. Champness (Creator)
  • Martin Schroder (Creator)



    A family of Cu(II)-based metal-organic frameworks (MOFs) has been synthesized using three pyridyl-isophthalate ligands, H<sub>2</sub>L<sup>1</sup> (4'-(pyridin-4-yl)biphenyl-3,5-dicarboxylic acid), H<sub>2</sub>L<sup>2</sup> (4''-(pyridin-4-yl)-1,1':4',1''-terphenyl-3,5-dicarboxylic acid) and H<sub>2</sub>L<sup>3</sup> (5-[4-(pyridin-4-yl)naphthalen-1-yl]benzene-1,3-dicarboxylic acid). Although in each case the pyridyl-isophthalate ligands adopt the same pseudo-octahedral [Cu<sub>2</sub>(O<sub>2</sub>CR)<sub>4</sub>N<sub>2</sub>] paddlewheel coordination modes, the resulting frameworks are structurally diverse, particularly in the case of the complex of Cu(II) with H<sub>2</sub>L<sup>3</sup>, which leads to three distinct supramolecular isomers, each derived from Kagomé and square nets. In contrast to [Cu(L<sup>2</sup>)] and the isomers of [Cu(L<sup>3</sup>)], [Cu(L<sup>1</sup>)] exhibits permanent porosity. Thus, the gas adsorption properties of [Cu(L<sup>1</sup>)] were investigated with N<sub>2</sub>, CO<sub>2</sub> and H<sub>2</sub>, and the material exhibits an isosteric heat of adsorption competitive with leading MOF sorbents for CO<sub>2</sub>. [Cu(L<sup>1</sup>)] displays high H<sub>2</sub> adsorption, with the density in the pores approaching that of liquid H<sub>2</sub>.
    Date made available17 Nov 2016


    • copper
    • metal-organic framework
    • gas adsoprtion
    • pyridyl-isophthalate

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