scholarly journals Effects of Main-Group and Transition Elements on Bond Formation and Cleavage in Transition-Metal Chalcogenide Clusters: Reactions of E2Fe3(CO)9 (E = Te, Se) with [Co(CO)4]-, [Mn(CO)5]-, and [Fe(CO)4]2-

1995 ◽  
Vol 34 (11) ◽  
pp. 2797-2803 ◽  
Author(s):  
Minghuey Shieh ◽  
Tse-Fang Tang ◽  
Shie-Ming Peng ◽  
Gene-Hsiang Lee
Keyword(s):  
Transition Metal ◽  
Bond Formation ◽  
Main Group ◽  
Transition Elements ◽  
Metal Chalcogenide ◽  
Chalcogenide Clusters

Electronic Structures of Electron-Rich Octahedrally Condensed Transition-Metal Chalcogenide Clusters

2002 ◽  
Vol 41 (4) ◽  
pp. 796-804 ◽  
Author(s):  
Régis Gautier ◽  
Eric Furet ◽  
Jean-François Halet ◽  
Zhenyang Lin ◽  
Jean-Yves Saillard ◽  
...  
Keyword(s):  
Transition Metal ◽  
Electronic Structures ◽  
Metal Chalcogenide ◽  
Chalcogenide Clusters

Synthesis and Structure of Ta4S9Br8. An Emergent Family of Early Transition Metal Chalcogenide Clusters

2005 ◽  
Vol 44 (24) ◽  
pp. 8756-8761 ◽  
Author(s):  
Maxim N. Sokolov ◽  
Artem L. Gushchin ◽  
Pavel A. Abramov ◽  
Alexandr V. Virovets ◽  
Eugenia V. Peresypkina ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Chalcogenide ◽  
Early Transition Metal ◽  
Chalcogenide Clusters ◽  
Early Transition

Synthesis and Structure of Ta4S9Br8. An Emergent Family of Early Transition Metal Chalcogenide Clusters.

ChemInform ◽  
2006 ◽  
Vol 37 (6) ◽  
Author(s):  
Maxim N. Sokolov ◽  
Artem L. Gushchin ◽  
Pavel A. Abramov ◽  
Alexandr V. Virovets ◽  
Eugenia V. Peresypkina ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Chalcogenide ◽  
Early Transition Metal ◽  
Chalcogenide Clusters ◽  
Early Transition

Effect of charge on bond formation and cleavage in main-group-transition-metal clusters: the reactions of Bi2Fe3(CO)9 with [Fe(CO)4]2- and [Co(CO)4]-

1986 ◽  
Vol 108 (10) ◽  
pp. 2778-2780 ◽  
Author(s):  
Kenton H. Whitmire ◽  
K. S. Raghuveer ◽  
Melvyn Rowen. Churchill ◽  
James C. Fettinger ◽  
Ronald F. See
Keyword(s):  
Transition Metal ◽  
Metal Clusters ◽  
Bond Formation ◽  
Main Group ◽  
Transition Metal Clusters

Carbon Dioxide-Mediated C(sp2)–H Arylation of Primary and Secondary Benzylamines

2018 ◽  
Author(s):  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Michael Young
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Bond Activation ◽  
Bond Formation ◽  
Carbon Bond ◽  
Chelate Effect ◽  
Free Amine ◽  
Carbon Carbon Bond ◽  
New Strategy ◽  
Metal Catalyzed

Carbon-carbon bond formation by transition metal-catalyzed C–H activation has become an important strategy to fabricate new bonds in a rapid fashion. Despite the pharmacological importance of <i>ortho</i>-arylbenzylamines, however, effective <i>ortho</i>-C–C bond formation from C–H bond activation of free primary and secondary benzylamines using Pd<sup>II</sup> remains an outstanding challenge. Presented herein is a new strategy for constructing <i>ortho</i>-arylated primary and secondary benzylamines mediated by carbon dioxide (CO<sub>2</sub>). The use of CO<sub>2</sub> is critical to allowing this transformation to proceed under milder conditions than previously reported, and that are necessary to furnish free amine products that can be directly used or elaborated without the need for deprotection. In cases where diarylation is possible, a chelate effect is demonstrated to facilitate selective monoarylation.

Catalytic Fluorination of Boron Compounds at a Bismuth Redox Platform

2019 ◽  
Author(s):  
Oriol Planas ◽  
Feng Wang ◽  
Markus Leutzsch ◽  
Josep Cornella
Keyword(s):  
Transition Metal ◽  
Main Group ◽  
Group Element ◽  
Oxidation States ◽  
Boron Compounds ◽  
Main Text ◽  
Main Group Element ◽  
Rational Ligand Design ◽  
Supplementary Material

The ability of bismuth to maneuver between different oxidation states in a catalytic redox cycle, mimicking the canonical organometallic steps associated to a transition metal, is an elusive and unprecedented approach in the field of homogeneous catalysis. Herein we present a catalytic protocol based on bismuth, a benign and sustainable main-group element, capable of performing every organometallic step in the context of oxidative fluorination of boron compounds; a territory reserved to transition metals. A rational ligand design featuring hypervalent coordination together with a mechanistic understanding of the fundamental steps, permitted a catalytic fluorination protocol based on a Bi(III)/Bi(V) redox couple, which represents a unique example where a main-group element is capable of outperforming its transition metal counterparts.<br>A main text and supplementary material have been attached as pdf files containing all the methodology, techniques and characterization of the compounds reported.<br>

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