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

Ploszajski, AR; Billing, M; Cockcroft, JK; Skipper, NT; (2018) Crystalline structure of an ammonia borane-polyethylene oxide cocrystal: a material investigated for its hydrogen storage potential. CrystEngComm , 20 (31) pp. 4436-4440. 10.1039/c8ce00872h. Green open access

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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.

Type: Article
Title: Crystalline structure of an ammonia borane-polyethylene oxide cocrystal: a material investigated for its hydrogen storage potential
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c8ce00872h
Publisher version: http://doi.org/10.1039/c8ce00872h
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Keywords: Science & Technology, Physical Sciences, Chemistry, Multidisciplinary, Crystallography, Chemistry, Oxide)-Mercuric Chloride Complex, Resorcinol Molecular-Complex, Poly(Ethylene Oxide), Supramolecular Complexes, Thermal-Decomposition, Dehydrogenation, Composite, Release, Polymer, Phase
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10054930
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