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Issue 31, 2018
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Crystalline structure of an ammonia borane–polyethylene oxide cocrystal: a material investigated for its hydrogen storage potential

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Abstract

The crystalline structure of a cocrystal comprising ammonia borane (AB) and a short-chain polyethylene oxide (PEO or PEG) has been determined by single-crystal X-ray diffraction. The components interact via hydrogen bonds between each of the hydrogen atoms at the NH3 end of the AB molecules and alternate oxygen atoms along the PEO backbone. The PEO chains in the structure exhibit an unusual conformation where their curvature reverses every 5 monomers, such that the polymer snakes through the crystal. This is the first time that an AB composite material has been determined to be a cocrystal, and no structure determination of a cocrystal to confine AB has been reported before.

Graphical abstract: Crystalline structure of an ammonia borane–polyethylene oxide cocrystal: a material investigated for its hydrogen storage potential

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Publication details

The article was received on 25 May 2018, accepted on 01 Jul 2018 and first published on 03 Jul 2018


Article type: Paper
DOI: 10.1039/C8CE00872H
Citation: CrystEngComm, 2018,20, 4436-4440
  • Open access: Creative Commons BY license
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    Crystalline structure of an ammonia borane–polyethylene oxide cocrystal: a material investigated for its hydrogen storage potential

    A. R. Ploszajski, M. Billing, J. K. Cockcroft and N. T. Skipper, CrystEngComm, 2018, 20, 4436
    DOI: 10.1039/C8CE00872H

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