A general method towards transition metal monoboride nanopowders

2017 ◽  
Vol 108 (4) ◽  
pp. 335-338 ◽  
Author(s):  
Weixiao Cao ◽  
Ya'nan Wei ◽  
Xin Meng ◽  
Yuexia Ji ◽  
Songlin Ran
Keyword(s):  
Transition Metal ◽  
General Method

scholarly journals Metallacarboranes: New synthetic strategies and structural patterns

2006 ◽  
Vol 78 (7) ◽  
pp. 1333-1340 ◽  
Author(s):  
Narayan S. Hosmane ◽  
John A. Maguire
Keyword(s):  
Transition Metal ◽  
Systematic Study ◽  
Metal Salts ◽  
Late Transition Metal ◽  
Structural Patterns ◽  
Transition Metal Salts ◽  
Late Transition ◽  
Synthesis Reactions ◽  
Oxide Ion ◽  
General Method

A summary of the latest results in the authors' laboratories covering three areas is presented. The results of the controlled syntheses of oxide ion encapsulating lanthanacarboranes, by the introduction of stoichiometric amounts of H2O in the synthesis reactions, and the strictures of the resulting compounds were discussed. The scope and limitations of a general method for the synthesis of the open pentadienyl complexes were presented. In addition, the results of a systematic study of the reactions of the [2,n-(SiMe3)2-nido-2,n-C2B4H4]2- (n = 3, 4) with the late transition-metal salts MCl2 (M = Fe, Co, Ni) were discussed.

scholarly journals A General Method for the Synthesis of Hybrid Nanostructures Using MoSe2 Nanosheet-Assembled Nanospheres as Templates

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Shikui Han ◽  
Kai Zhou ◽  
Yifu Yu ◽  
Chaoliang Tan ◽  
Junze Chen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Synergistic Effects ◽  
Low Cost ◽  
Transition Metal Dichalcogenides ◽  
Synthesis Method ◽  
Hybrid Nanostructures ◽  
Colloidal Synthesis ◽  
Earth Abundant ◽  
Transition Metal Phosphides ◽  
General Method

The layered transition metal dichalcogenides (TMDs) and transition metal phosphides are low-cost, earth-abundant, and robust electrocatalysts for hydrogen evolution reaction (HER). Integrating them into hybrid nanostructures is potentially promising to further boost the catalytic activity toward HER based on their synergistic effects. Herein, we report a general method for the synthesis of a series of MoSe2-based hybrid nanostructures, including MoSe2-Ni2P, MoSe2-Co2P, MoSe2-Ni, MoSe2-Co, and MoSe2-NiS, by postgrowth of Ni2P, Co2P, Ni, Co, and NiS nanostructures on the presynthesized MoSe2 nanosheet-assembled nanospheres, respectively, via a colloidal synthesis method. As a proof-of-concept application, the as-synthesized hybrid nanostructures are used as electrocatalysts for HER, exhibiting high activity and stability in acidic media. Among them, the MoSe2-Co2P composite shows the highest HER activity with an overpotential of 167 mV at 10 mA cm-2.

A General Method for Transition Metal Single Atoms Anchored on Honeycomb‐Like Nitrogen‐Doped Carbon Nanosheets

2020 ◽  
Vol 32 (10) ◽  
pp. 1906905 ◽  
Author(s):  
Xiaoyan Zhang ◽  
Shan Zhang ◽  
Yong Yang ◽  
Liguang Wang ◽  
Zijie Mu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Carbon Nanosheets ◽  
Nitrogen Doped ◽  
Single Atoms ◽  
Nitrogen Doped Carbon ◽  
General Method

Transition-metal mediated asymmetric synthesis. IV. Chelation of malonate esters by a chiral lanthanide shift reagent: a general method to measure theenantiomeric excess of tricarbonyl(cyclohexadienyl)iron(1+) salts

1982 ◽  
Vol 35 (9) ◽  
pp. 1939 ◽  
Author(s):  
GR Stephenson
Keyword(s):  
Transition Metal ◽  
Asymmetric Synthesis ◽  
Enantiomeric Excess ◽  
Shift Reagent ◽  
Lanthanide Shift Reagent ◽  
Derivatives Of ◽  
General Method

Chelation of dimethylmalonate derivatives of variously substituted tricarbonyl(cyclohexadienyl)-iron(1+) salts by tris(3-trifluoroacetyl-(+)-camphorato)europium(III) successfully resolved the methoxy resonances due to the two epimers of the cyclohexadiene complexes in the 1H n.m.r. spectra of racemic samples. The method provides a general means to measure enantiomeric excess of tricarbonyliron complexes.

General method for stereoselective coupling of an alkyl, aryl, or vinyl group with a vinylidene unit at a transition-metal center

1993 ◽  
Vol 115 (21) ◽  
pp. 9864-9865 ◽  
Author(s):  
Ralf Wiedemann ◽  
Paul Steinert ◽  
Martin Schaefer ◽  
Helmut Werner
Keyword(s):  
Transition Metal ◽  
Metal Center ◽  
Alkyl Aryl ◽  
Vinyl Group ◽  
General Method

Two-dimensional ultrathin ZnCo2O4 nanosheets: general formation and lithium storage application

2015 ◽  
Vol 3 (18) ◽  
pp. 9556-9564 ◽  
Author(s):  
Youqi Zhu ◽  
Chuanbao Cao ◽  
Junting Zhang ◽  
Xingyan Xu
Keyword(s):  
Transition Metal ◽  
Large Scale ◽  
Storage Capacity ◽  
Rate Capability ◽  
High Rate ◽  
Two Dimensional ◽  
High Rate Capability ◽  
Lithium Storage ◽  
Excellent Cycling Stability ◽  
General Method

2D multicomponent transition-metal oxide nanosheets are synthesized on a large scale via a general method. Ultrathin ZnCo2O4 nanosheets exhibit high lithium storage capacity, excellent cycling stability, and good high-rate capability.

General Method for Synthesizing Transition-Metal Phosphide/N-Doped Carbon Nanomaterials for Hydrogen Evolution

Langmuir ◽  
2019 ◽  
Vol 35 (28) ◽  
pp. 9161-9168 ◽  
Author(s):  
Lunqiang Jin ◽  
Xiang Zhang ◽  
Weifeng Zhao ◽  
Shengqiu Chen ◽  
Zhenqiang Shi ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Carbon Nanomaterials ◽  
Metal Phosphide ◽  
Transition Metal Phosphide ◽  
General Method

Sonication and Microwave-Assisted Primary Amination of Potassium­ Aryltrifluoroborates and Phenylboronic Acids under Metal-Free Conditions

Synthesis ◽  
2017 ◽  
Vol 49 (11) ◽  
pp. 2555-2561 ◽  
Author(s):  
Dale Kuik ◽  
J. McCubbin ◽  
Geoffrey Tranmer
Keyword(s):  
Transition Metal ◽  
Reaction Times ◽  
Aqueous Sodium Hydroxide ◽  
Metal Free ◽  
Microwave Assisted ◽  
Free Generation ◽  
Phenylboronic Acids ◽  
Microwave Assisted Method ◽  
General Method ◽  
Electron Withdrawing Substituents

The transition-metal-free generation of a series of primary arylamines from potassium aryltrifluoroborates and phenylboronic acids­ is reported. The method uses a mild, inexpensive source of nitrogen (hydroxylamine-O-sulfonic acid) in cooperation with aqueous sodium hydroxide in acetonitrile. Both a sonication and a microwave-assisted method were developed, which are capable of converting ArBF3K functionalities into primary arylamines (ArNH2) in isolated yields of up to 78% (10 examples for each method). This report represents the first general method for the conversion of aryltrifluoroborates into primary arylamines under mild, transition-metal-free conditions in moderate to very good yields. The method is applicable to a wide array of substrates containing electron-donating, electron-neutral, or electron-withdrawing substituents. Both the sonication and microwave methods were also applied to the generation of anilines from phenylboronic acids in isolated yields of up to 96% (12 examples for each method) that were superior to existing room temperature methods in terms of yield, while also offering much shorter reaction times (15 min vs 16 h). In particular, the microwave method is the first to allow for the conversion of arylboronic acids containing strongly electron-withdrawing substituents into the corresponding anilines in good yields, along with electron-donating­ substituents in very good to excellent yields.

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