Amidoboranes of rubidium and caesium: the last missing members of the alkali metal amidoborane family. Issue 46 (16th November 2017)

• Record Type: Journal Article
• Authors: Owarzany, Rafał; Jaroń, Tomasz; Leszczyński, Piotr J.; Fijalkowski, Karol J.; Grochala, Wojciech
• Is Part Of: Dalton transactions. Volume 46:Issue 46(2017)
• Page Start: 16315
• Page End: 16320
• Publication Date: 2017-11-16
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt03590j
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The nature of temperature-induced phase transitions of rubidium and caesium amidoboranes was elucidated using structural and spectroscopic methods. Abstract : We report the synthesis and physicochemical characterization of two ammonia borane derivatives: rubidium amidoborane (RbNH2 BH3 ) and caesium amidoborane (CsNH2 BH3 ). Both compounds undergo solid–solid phase transition upon heating and then evolve pure hydrogen at temperatures lower than 125 °C. The phase transition is clearly seen in the Raman spectra. We present crystal structures of both low- and high-temperature forms of the title compounds which were solved from powder X-ray data.