Issue 4, 2016

An indirect generation of 1D MII-2,5-dihydroxybenzoquinone coordination polymers, their structural rearrangements and generation of materials with a high affinity for H2, CO2 and CH4

Abstract

A series of solid-state structural transformations are found to accompany desolvation of relatively simple coordination polymers to yield materials that exhibit unexpected gas sorbing properties. Reaction of 1,2,4,5-tetrahydroxybenzene with MII salts (M = Mg, or Zn) in an alcohol/water solution in the presence of air affords cis-MII(C6H2O4−II)(H2O)2·2H2xROH, (M = Mg, or Zn), crankshaft-like chains in which the absolute configurations of the chiral metal centres follow the pattern ⋯Δ Δ Λ Λ Δ Δ Λ Λ⋯, and are hydrogen bonded together to generate spacious channels. When crystals of the crankshaft chain are air dried the crystals undergo a single crystal-to-powder rearrangement to form linear trans-MII(C6H2O4−II)(H2O)2 chains. Further dehydration yields microporous solids that reversibly sorb H2, CH4 and CO2 with high sorption enthalpies.

Graphical abstract: An indirect generation of 1D MII-2,5-dihydroxybenzoquinone coordination polymers, their structural rearrangements and generation of materials with a high affinity for H2, CO2 and CH4

Supplementary files

Article information

Article type
Communication
Submitted
19 Oct 2015
Accepted
22 Dec 2015
First published
06 Jan 2016

Dalton Trans., 2016,45, 1339-1344

Author version available

An indirect generation of 1D MII-2,5-dihydroxybenzoquinone coordination polymers, their structural rearrangements and generation of materials with a high affinity for H2, CO2 and CH4

B. F. Abrahams, A. D. Dharma, B. Dyett, T. A. Hudson, H. Maynard-Casely, C. J. Kingsbury, L. J. McCormick, R. Robson, A. L. Sutton and K. F. White, Dalton Trans., 2016, 45, 1339 DOI: 10.1039/C5DT04095G

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