Results 61 to 70 of about 47,782 (256)

Validation of Boron Analytical Methods on Standard Reference Material Tomato Leaves from NIST No. 1573a with Isothermal Distillation by UV-Vis Spectrophotometry

Kovalen: Jurnal Riset Kimia, 2022
Boron analysis by UV-Vis spectrophotometry has been developed through distilling triethoxy borane into the curcumin solution. In the distillation of ester borane, an esterification reaction occurs between borate and ethanol.
Isna Lailatusholihah, Roto, Agus Kuncaka, Ninik Triayu Susparini   +3 more
doaj   +1 more source

Photolysis of Diborane at 1849 Å [PDF]

, 1962
The photolysis of diborane at 1849 Å has been studied in a specially constructed, internal‐type mercury‐vapor lamp. The products have been found to be H_2, B_(4)H_(10), B_(5)H_(11), and, at low pressures, a —BH— polymer.
Kreye, W. C., Marcus, R. A.
core   +1 more source

Phosphido-borane-supported stannates

Dalton Transactions, 2023
While the reaction between three equivalents of the alkali metal phosphido-borane complexes [R2P(BH3)]M (M = Li, Na, K; R = Ph, iPr) with SnCl2gave the tris(phosphido-borane)stannates [M{R2P(BH3)}3Sn], similar reactions between [tBu2P(BH3)]M and SnCl2gave the known hydrido-stannate [M{tBu2P(BH3)}2Sn(H)].
Keith Izod, Atheer M. Madlool, Alex Craig, Paul G. Waddell   +3 more
openaire   +3 more sources

Homogeneous CO Hydrogenation: Dihydrogen Activation Involves a Frustrated Lewis Pair Instead of a Platinum Complex [PDF]

, 2010
During a search for conditions appropriate for Pt-catalyzed CO reduction using dihydrogen directly, metal-free conditions were discovered instead.
Bercaw, John E., Labinger, Jay A., Miller, Alexander J. M.   +2 more
core   +1 more source

First-principles study on the intermediate compounds of LiBH$_4$

, 2006
We report the results of the first-principles calculation on the intermediate compounds of LiBH$_4$. The stability of LiB$_3$H$_8$ and Li$_2$B$_n$H$_n (n=5-12)$ has been examined with the ultrasoft pseudopotential method based on the density functional ...
A. Fukumoto, Andreas Züttel, B. Morosin, D. Vanderbilt, G. A. Olah, I. Y. Kuznetsov, Kazutoshi Miwa, Masakazu Aoki, Nobuko Ohba, S. Orimo, Shin-ichi Orimo, Shin-ichi Towata, Tatsuo Noritake, Yuko Nakamori   +13 more
core   +1 more source

The topological uniqueness of the deltahedra found in the boranes BnHn2− (6≤n≤12) [PDF]

, 1990
The deltahedra observed experimentally in the borane anions BnHn2− (6≤n≤12) are the only possible n-vertex deltahedra having only degree 4 and 5 vertices.
Duijvestijn, A.J.W., King, R.B.
core   +2 more sources

Ring‐opening metathesis polymerization‐Derived Organoborane Polymers as Strong Lewis Acids and Luminescent Materials

ChemistryEurope
Decoration of polymers with Lewis acidic borane moieties is attractive as it enables the development of functional materials for use as powerful supported catalysts, chemical sensors, and building blocks of novel supramolecular materials.
James McQuade, Fernando Vidal, Mah Noor, Lakshita Anand, Roger A. Lalancette, Frieder Jäkle   +5 more
doaj   +1 more source

Stereoselective Synthesis of 8-Trialkylstannylmenthols

Molecules, 2000
Trialkyltin menthones of type 2 are obtained selectively by 1,4-addition of trialkylstannyl lithium to (-)-pulegone. Reduction of 2 with borane in THF using as catalyst the reagent prepared from borane and (S)-valinol gave a mixture of the corresponding ...
Julio C. Podestá, Verónica Dodero, Nelda N. Giagante, Sandra D. Mandolesi   +3 more
doaj   +1 more source

Synthesis of Polyhedral Borane Cluster Fused Heterocycles via Transition Metal Catalyzed B-H Activation

Molecules, 2020
Aromatic heterocycles are ubiquitous building blocks in bioactive natural products, pharmaceutical and agrochemical industries. Accordingly, the carborane-fused heterocycles would be potential candidates in drug discovery, nanomaterials ...
Ke Cao, Cai-Yan Zhang, Tao-Tao Xu, Ji Wu, Xin-Yu Wen, Wen-Jun Jiang, Mao Chen, Junxiao Yang   +7 more
doaj   +1 more source

Z-Selective Homodimerization of Terminal Olefins with a Ruthenium Metathesis Catalyst [PDF]

, 2011
The cross-metathesis of terminal olefins using a novel ruthenium catalyst results in excellent selectivity for the Z-olefin homodimer. The reaction was found to tolerate a large number of functional groups, solvents, and temperatures while maintaining ...
Endo, Koji, Grubbs, Robert H., Herbert, Myles B., Keitz, Benjamin K.   +3 more
core   +2 more sources