Title | Structure and thermal decomposition of methylamine borane |
Publication Type | Journal Article |
Year of Publication | 2008 |
Authors | Bowden, M.E., Brown I.W.M., Gainsford G.J., and Wong H. |
Journal | Inorganica Chimica Acta |
Volume | 361 |
Issue | 7 |
Pagination | 2147 - 2153 |
Date Published | 2008 |
ISSN | 00201693 (ISSN) |
Abstract | The crystal structure of methylamine borane has been determined and contains parallel chains of dihydrogen-bonded CH3NH2BH3 molecules. Thermal decomposition takes place from the melt (ΔHfusion = 8.5 kJ mol-1) and begins with the formation of an ionic borohydride. Hydrogen is liberated in two stages, at ca. 100 and 190 °C, with the observed rates during the first stage (ΔH = -25 kJ mol-1, Ea = 115 kJ mol-1) strongly dependent on temperature and time. cis- and trans-N-trimethylcyclotriborazane are formed during the first stage and subsequently cross-link to yield a non-volatile solid. Before this cross-linking, the system exhibited a high degree of volatility, with weight losses in excess of 80% observed in TG experiments using flowing gas. © 2007 Elsevier B.V. All rights reserved. |
URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-41749083768&partnerID=40&md5=70aef40f2abf8afa0ea6718be88ecace |
DOI | 10.1016/j.ica.2007.10.034 |