The interconversion between THF·B<sub>3</sub>H<sub>7</sub> and B<sub>3</sub>H<sub>8</sub><sup>−</sup>: an efficient synthetic method for MB<sub>3</sub>H<sub>8</sub> (M = Li and Na)
作者:Xin-Ran Liu、Xi-Meng Chen、Jie Zhang、Torben R. Jensen、Xuenian Chen
DOI:10.1039/c9dt00843h
日期:——
Efficient synthetic methods for Li/NaB3H8 have been developed based on the nucleophilicity of the B–H bonding pair electrons.
基于B-H键对电子的亲核性,已经开发出了高效的Li/NaB3H8合成方法。
Hydroboration Reaction and Mechanism of Carboxylic Acids using NaNH<sub>2</sub>(BH<sub>3</sub>)<sub>2</sub>, a Hydroboration Reagent with Reducing Capability between NaBH<sub>4</sub> and LiAlH<sub>4</sub>
NH2BH3– were identified and characterized by 11B and 1H NMR. The reducing capacity of NaADBH was found between that of NaBH4 and LiAlH4. We have thus found that NaADBH is a promising reducing agent for hydroboration because of its stability and easy handling. These reactions exhibit excellent yields and good selectivity, therefore providing alternative synthetic approaches for the conversion of carboxylic
Heterogeneous Dehydrocoupling of Amine–Borane Adducts by Skeletal Nickel Catalysts
作者:Alasdair P. M. Robertson、Riccardo Suter、Laurent Chabanne、George R. Whittell、Ian Manners
DOI:10.1021/ic201809g
日期:2011.12.19
transition metal. Catalytic dehydrocoupling of Me2NH·BH3 (1) and Et2NH·BH3 (5) was demonstrated using 5 mol % skeletal Ni catalyst at 20 °C and produced [Me2N–BH2]2 (2) and [Et2N–BH2]2/Et2N═BH2 (6), respectively. The related adduct iPr2NH·BH3 (7) was also dehydrogenated to afford iPr2N═BH2 (8) but with significant catalyst deactivation. Catalytic dehydrocoupling of MeNH2·BH3 (9) was found to yield the
Aluminum borate nanowires from the pyrolysis of polyaminoborane precursors
作者:Van An Du、Titel Jurca、George R. Whittell、Ian Manners
DOI:10.1039/c5dt03324a
日期:——
[N(R)H-BH2]n (1: R = H, 2: R = Me) were pyrolyzed on a range of substrates: silicon, metal foils (stainless steel, nickel, and rhodium), and sapphire wafers, as well as on Al2O3 and AlN powders. The pyrolysis of 2 on a Si-wafer resulted in porous nanostructures containing hexagonal-boron nitride (h-BN). In the case of 1 or H3N·BH3 as precursor, using rhodium foil as substrate afforded amorphous B and N-containing
聚氨基硼烷[N(R)H-BH 2 ] n(1:R = H,2:R = Me)在一系列衬底上热解:硅,金属箔(不锈钢,镍和铑)和蓝宝石晶片以及Al 2 O 3和AlN粉末。2在硅晶片上的热解产生了包含六方氮化硼(h-BN)的多孔纳米结构。在以1或H 3 N·BH 3为前体的情况下,使用铑箔作为基材,分别得到非晶态的含B和N的纳米结构,以及多分散的球形纳米粒子。将基板切换为蓝宝石晶片和Al 2O 3或AlN粉末会导致形成晶体Al 5 BO 9纳米结构(纳米线,纳米管和纳米带)。对于蓝宝石晶片,通过改变表面缺陷密度来影响所得纳米线的尺寸。
Iridium-Catalyzed Dehydrogenation of Substituted Amine Boranes: Kinetics, Thermodynamics, and Implications for Hydrogen Storage
作者:Brandon L. Dietrich、Karen I. Goldberg、D. Michael Heinekey、Tom Autrey、John C. Linehan
DOI:10.1021/ic801161g
日期:2008.10.6
Dehydrogenation of amineboranes is catalyzed efficiently by the iridium pincer complex (kappa (3)-1,3-(OP ( t )Bu 2) 2C 6H 3)Ir(H) 2 ( 1). With CH 3NH 2BH 3 (MeAB) and with AB/MeAB mixtures (AB = NH 3BH 3), the rapid release of 1 equiv of H 2 is observed to yield soluble oligomeric products at rates similar to those previously reported for the dehydrogenation of AB catalyzed by 1. Delta H for the