6569-51-3Relevant articles and documents
Osmium-promoted dehydrogenation of amine-boranes and B-H bond activation of the resulting amino-boranes
Esteruelas, Miguel A.,Fernandez, Israel,Lopez, Ana M.,Mora, Malka,Onate, Enrique
, p. 1104 - 1107 (2014)
The five-coordinate osmium complex OsH(SH)(CO)(PiPr 3)2, containing an electrophilic center bonded to the soft hydrogen sulfide ligand, promotes dehydrogenation of amine-boranes and captures the amino-borane products, form
Dahl,Schaeffer
, (1960)
Schlesinger, H. I.,Ritter, D. M.,Burg, A. B.
, p. 1296 - 1300 (1938)
Efficient catalytic conversion of ammonia borane to borazine and its use for hexagonal boron nitride (white graphene)
Kim, Sung-Kwan,Cho, Hyunjin,Kim, Myung Jong,Lee, Hee-Jun,Park, Jin-Hyung,Lee, Young-Boo,Kim, Hwan Chul,Yoon, Chang Won,Nam, Suk Woo,Kang, Sang Ook
, p. 1976 - 1981 (2013)
Nickel nanoparticles (NiNPs) prepared in tetraglyme (TG) efficiently catalyzed the conversion of ammonia borane (AB, NH3BH3) to borazine (B3N3H6). Under the optimized conditions, 3 mol% of the NiNPs were introduced into a 1.5 M AB solution in TG and held at 80 °C for 6 h under a dynamic vacuum that was maintained at 30 torr. Borazine was isolated through a series of -45 °C, -78 °C, and -196 °C traps to give (-78 °C trap) pure borazine in 53% yield. The borazine produced was then utilized as a molecular precursor for high quality h-BN (white graphene) and large area h-BN sheets were prepared by applying low pressure chemical vapor deposition (LPCVD). Ultra-thin (single to few layers) h-BN was synthesized on Ni foil at the optimal ratio between borazine and NH3, and the number of layers was tuned by varying the NH3 partial pressure. The Royal Society of Chemistry 2013.
Thermolysis and solid state NMR studies of NaB3H8, NH3B3H7, and NH4B3H 8
Huang, Zhenguo,Eagles, Mitch,Porter, Spencer,Sorte, Eric G.,Billet, Beau,Corey, Robert L.,Conradi, Mark S.,Zhao, Ji-Cheng
, p. 701 - 708 (2013)
In an effort to broaden the search for high-capacity hydrogen storage materials, three triborane compounds, NaB3H8, NH 3B3H7, and NH4B3H 8, were studied. In addition to hydrogen, thermal decomposition also releases volatile boranes, and the relative amounts and species depend on the cations (Na+, NH4+) and the Lewis base (NH 3). Static-sample hydrogen NMR is used to probe molecular motion in the three solids. In each case, the line width decreases from low temperatures to room temperature in accordance with a model of isotropic or nearly isotropic reorientations. Such motions also explain a deep minimum in the relaxation time T1. Translational diffusion never appears to be rapid on the 10 -5 s time scale of NMR.
Dehydrogenation of ammonia-borane by Shvo's catalyst
Conley, Brian L.,Williams, Travis J.
, p. 4815 - 4817 (2010)
Shvo's cyclopentadienone-ligated ruthenium complex is an efficient catalyst for the liberation of exactly two molar equivalents of hydrogen from ammonia-borane, a prospective hydrogen storage medium. The mechanism for the dehydrogenation features a ruthenium hydride resting state from which dihydrogen loss is the rate-determining step.
Bismuthanylstibanes
Chitnis, Saurabh S.,Marczenko, Katherine M.
, p. 8015 - 8018 (2020)
Thermally-robust bismuthanylstibanes are prepared in a one-step, high yield reaction, providing the first examples of neutral Bi-Sb σ-bonds in the solid state. DFT calculations indicate that the bis(silylamino)naphthalene scaffold is well-suited for supporting otherwise labile bonds. The reaction chemistry of the Bi-Sb bond is debuted by showing fission using NH3BH3 and insertion of a sulfur atom, the latter providing the first example of a Bi-S-Sb motif. This journal is
Amine-Borane Dehydrogenation and Transfer Hydrogenation Catalyzed by α-Diimine Cobaltates
Maier, Thomas M.,Sandl, Sebastian,Shenderovich, Ilya G.,Jacobi von Wangelin, Axel,Weigand, Jan J.,Wolf, Robert
, p. 238 - 245 (2019/01/04)
Anionic α-diimine cobalt complexes, such as [K(thf)1.5{(DippBIAN)Co(η4-cod)}] (1; Dipp=2,6-diisopropylphenyl, cod=1,5-cyclooctadiene), catalyze the dehydrogenation of several amine-boranes. Based on the excellent catalytic properties, an especially effective transfer hydrogenation protocol for challenging olefins, imines, and N-heteroarenes was developed. NH3BH3 was used as a dihydrogen surrogate, which transferred up to two equivalents of H2 per NH3BH3. Detailed spectroscopic and mechanistic studies are presented, which document the rate determination by acidic protons in the amine-borane.
