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Pressure-induced structural changes in Methylamine borane and dimethylamine borane

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)953-961
Number of pages9
JournalJournal of alloys and compounds
Volume722
Early online date17 Jun 2017
DOIs
Publication statusPublished - 25 Oct 2017

Abstract

Methylamine borane and dimethylamine borane have been studied under compression to 3 GPa using Raman spectroscopy and synchrotron powder X-ray diffraction. Both undergo reversible pressure-induced structural changes in this pressure range. The structural changes in the case of methylamine borane may be indicative of a second-order phase transition, taking place between ca. 0.8-1.2 GPa, which does not result in a change of space-group symmetry. In the case of dimethylamine borane, however, a reversible, reconstructive phase transition (monoclinic -> orthorhombic) occurs below 0.7 GPa. This new high-pressure phase was successfully indexed, with a possible space group assignment of Pccn or Pbcn. (C) 2017 Elsevier B.V. All rights reserved.

    Research areas

  • Hydrogen storage, Phase transition, High pressure, Synchrotron X-ray powder diffraction, HYDROGEN-STORAGE MATERIALS, X-RAY-DIFFRACTION, MAGNESIUM BOROHYDRIDE MG(BH4)(2), AMMONIA-BORANE, CRYSTAL-STRUCTURE, CATALYTIC DEHYDROCOUPLING/DEHYDROGENATION, THERMAL-DECOMPOSITION, DIHYDROGEN BOND, AMINE-BORANES, DEHYDROGENATION

ID: 46984555