Amidoboranes of rubidium and caesium: the last missing members of the alkali metal amidoborane family
作者:Rafał Owarzany、Tomasz Jaroń、Piotr J. Leszczyński、Karol J. Fijalkowski、Wojciech Grochala
DOI:10.1039/c7dt03590j
日期:——
characterization of two ammonia borane derivatives: rubidium amidoborane (RbNH2BH3) and caesium amidoborane (CsNH2BH3). Both compounds undergo solid–solid phasetransition upon heating and then evolve pure hydrogen at temperatures lower than 125 °C. The phasetransition 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
A potential K-ion solid-state electrolyte K[B3H7NH2BH2NH2B3H7] was synthesized and its relatively high K+ conductivity of 1.01 × 10−4 S cm−1 at 75 °C was obtained probably due to the increased electrostatic potential and size of the anions.
一种潜在的K离子固态电解质K [B3H7NH2BH2NH2B3H7]已经合成,其在75°C时相对较高的K+电导率为1.01×10−4 S cm−1,可能是由于阴离子的电静势和大小增加所致。
An improved method for the synthesis and formation mechanism of M<sub>2</sub>B<sub>10</sub>H<sub>14</sub> based on the reactions of B<sub>10</sub>H<sub>14</sub> with MNH<sub>2</sub>BH<sub>3</sub> (M = Na, K)
An efficient method for the synthesis of M2B10H14 (M = Na and K) has been developed. The two possible formationmechanisms of the B10H142− anion are proposed, in which the NH2BH3− anion acts as a proton abstractor and a hydride donor. Furthermore, the B10H13− and B10H15− intermediates were detected.
开发了一种有效合成 M 2 B 10 H 14 (M = Na 和 K)的方法。提出了B 10 H 14 2−阴离子的两种可能的形成机制,其中NH 2 BH 3 −阴离子充当质子吸收剂和氢化物供体。此外,还检测到B 10 H 13 -和B 10 H 15 -中间体。
Potassium(I) Amidotrihydroborate: Structure and Hydrogen Release
作者:Himashinie V. K. Diyabalanage、Tessui Nakagawa、Roshan P. Shrestha、Troy A. Semelsberger、Benjamin L. Davis、Brian L. Scott、Anthony K. Burrell、William I. F. David、Kate R. Ryan、Martin Owen Jones、Peter P. Edwards
DOI:10.1021/ja100167z
日期:2010.9.1
Potassium(I) amidotrihydroborate (KNH2BH3) is a newly developed potential hydrogen storage material representing a completely different structural motif within the alkali metal amidotrihydroborate group. Evolution of 6.5 wt % hydrogen starting at temperatures as low as 80 degrees C is observed and shows a significant change in the hydrogen release profile, as compared to the corresponding lithium and sodium compounds. Here we describe the synthesis, structure, and hydrogen release characteristics of KNH2BH3.