Experimental and Theoretical Studies on Ferromagnetically Coupled Metal Complexes with Imino Nitroxides

2001 ◽  
Vol 40 (22) ◽  
pp. 5518-5525 ◽  
Author(s):  
Hiroki Oshio ◽  
Masashi Yamamoto ◽  
Tasuku Ito ◽  
Hidekazu Kawauchi ◽  
Nobuaki Koga ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Theoretical Studies ◽  
Experimental And Theoretical Studies

scholarly journals Mechanistic insight into hydroxamate transfer reaction mimicking the inhibition of zinc-containing enzymes

2020 ◽  
Vol 11 (33) ◽  
pp. 9017-9021
Author(s):  
Nam Kwon ◽  
Jong-Min Suh ◽  
Mi Hee Lim ◽  
Hajime Hirao ◽  
Jaeheung Cho
Keyword(s):  
Metal Complexes ◽  
Transfer Reaction ◽  
Theoretical Studies ◽  
Mechanistic Insight ◽  
Experimental And Theoretical Studies ◽  
Insight Into

A hydroxamate transfer reaction between metal complexes has been investigated by a combination of experimental and theoretical studies.

scholarly journals Carbones and Carbon Atom as Ligands in Transition Metal Complexes

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4943 ◽  
Author(s):  
Lili Zhao ◽  
Chaoqun Chai ◽  
Wolfgang Petz ◽  
Gernot Frenking
Keyword(s):  
Carbon Atom ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Metal Atom ◽  
Lanthanide Complexes ◽  
Theoretical Studies ◽  
Complete Coverage ◽  
Review Reports ◽  
Experimental And Theoretical Studies

This review summarizes experimental and theoretical studies of transition metal complexes with two types of novel metal-carbon bonds. One type features complexes with carbones CL2 as ligands, where the carbon(0) atom has two electron lone pairs which engage in double (σ and π) donation to the metal atom [M]⇇CL2. The second part of this review reports complexes which have a neutral carbon atom C as ligand. Carbido complexes with naked carbon atoms may be considered as endpoint of the series [M]-CR3 → [M]-CR2 → [M]-CR → [M]-C. This review includes some work on uranium and cerium complexes, but it does not present a complete coverage of actinide and lanthanide complexes with carbone or carbide ligands.

The Stabilizing Effect of Pre-Equilibria: A Trifluoromethyl Complex as CF2 Reservoir in Catalytic Olefin Difluorocarbenation

2020 ◽  
Author(s):  
Thomas Louis-Goff ◽  
Huu Vinh Trinh ◽  
Eileen Chen ◽  
Arnold L. Rheingold ◽  
Christian Ehm ◽  
...  
Keyword(s):  
High Selectivity ◽  
Side Reactions ◽  
Theoretical Studies ◽  
Attractive Feature ◽  
Catalyst Recovery ◽  
Wide Range ◽  
Stabilizing Effect ◽  
Experimental And Theoretical Studies

A new, efficient, catalytic difluorocarbenation of olefins to give 1,1-difluorocyclopropanes is presented. The catalyst, an organobismuth complex, uses TMSCF<sub>3</sub> as a stoichiometric difluorocarbene source. We demonstrate both the viability and robustness of this reaction over a wide range of alkenes and alkynes, including electron-poor alkenes, to generate the corresponding 1,1-difluorocyclopropanes and 1,1-difluorocyclopropenes. Ease of catalyst recovery from the reaction mixture is another attractive feature of this method. In depth experimental and theoretical studies showed that the key difluorocarbene-generating step proceeds through a bismuth non-redox synchronous mechanism generating a highly reactive free CF<sub>2</sub> in an endergonic pre-equilibrium. It is the reversibility when generating the difluorocarbene that accounts for the high selectivity, while minimizing CF<sub>2</sub>-recombination side-reactions.

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