Gas adsorption in an isostructural series of pillared coordination cages

Aeri J Gosselin; Gregory R Lorzing; Benjamin A Trump; Craig M Brown; Eric D Bloch

doi:10.1039/c8cc03216e

Gas adsorption in an isostructural series of pillared coordination cages

Chem Commun (Camb). 2018 Jun 14;54(49):6392-6395. doi: 10.1039/c8cc03216e.

Authors

Aeri J Gosselin^{1

2}, Gregory R Lorzing^{1

2}, Benjamin A Trump³, Craig M Brown^{3

4}, Eric D Bloch^{1

2}

Affiliations

¹ Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19716, USA. edb@udel.edu.
² Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
³ Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
⁴ Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.

PMID: 29872776
DOI: 10.1039/c8cc03216e

Abstract

The synthesis and characterization of two novel pillared coordination cages is reported. By utilizing 1,4-diazabicyclo[2.2.2]octane (dabco) as a pillar with increased basicity as compared to pyrazine or 4,4'-bipyridine, a stable copper-based material was prepared. Extending this strategy to iron(ii) afforded an isostructural material that similarly retains high porosity and crystallinity upon solvent evacuation. Importantly, the iron solid represents a rare example of porous iron paddlewheel-based metal-organic material that is stable to solvent evacuation. Neutron powder diffraction studies on these materials indicate the triangular and square windows of the cage are prime ethane and ethylene adsorption sites.