Why Is Re−Re Bond Formation/Cleavage in [Re(bpy)(CO)3]2Different from That in [Re(CO)5]2? Experimental and Theoretical Studies on the Dimers and Fragments

2004 ◽  
Vol 43 (24) ◽  
pp. 7636-7647 ◽  
Author(s):  
Etsuko Fujita ◽  
James T. Muckerman
Keyword(s):  
Bond Formation ◽  
Theoretical Studies ◽  
Experimental And Theoretical Studies

scholarly journals Mechanistic studies on the N-alkylation of amines with alcohols catalysed by iridium(i) complexes with functionalised N-heterocyclic carbene ligands

2018 ◽  
Vol 8 (9) ◽  
pp. 2381-2393 ◽  
Author(s):  
M. Victoria Jiménez ◽  
Javier Fernández-Tornos ◽  
Miguel González-Lainez ◽  
Beatriz Sánchez-Page ◽  
F. Javier Modrego ◽  
...  
Keyword(s):  
Bond Formation ◽  
Theoretical Studies ◽  
Mechanistic Studies ◽  
Carbene Ligands ◽  
Experimental And Theoretical Studies

Experimental and theoretical studies give support for an iridium-catalyzed C–N bond formation.

Experimental and Theoretical Studies on Gold(III) Carbonyl Complexes: Reductive C,H- and C,C Bond Formation

2021 ◽  
Author(s):  
Alexander Ahrens ◽  
Danilo M. Lustosa ◽  
Leonhard F. P. Karger ◽  
Marvin Tim Hoffmann ◽  
Matthias Rudolph ◽  
...  
Keyword(s):  
Bond Formation ◽  
Theoretical Studies ◽  
Carbonyl Complexes ◽  
Migratory Insertion ◽  
Experimental And Theoretical Studies

The reactivity of cationic (C^C)gold(III) carbonyl complexes was investigated. While the in situ-formed IPrAu(bph)CO+ complex (bph = biphenyl-2,2’-diyl) does not undergo a migratory insertion of CO into the neighboring gold-carbon...

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.

Strong coupling: resonant effects

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Strong Coupling ◽  
Experimental Studies ◽  
Strong Coupling Regime ◽  
Theoretical Studies ◽  
Stimulated Scattering ◽  
Quantum Theories ◽  
Pump Probe ◽  
Exciton Polaritons ◽  
Linear Optical Properties ◽  
Experimental And Theoretical Studies

This chapter presents experimental studies performed on planar semiconductor microcavities in the strong-coupling regime. The first section reviews linear experiments performed in the 1990s that evidence the linear optical properties of cavity exciton-polaritons. The chapter is then focused on experimental and theoretical studies of resonantly excited microcavity emission. We mainly describe experimental configuations in which stimulated scattering was observed due to formation of a dynamical condensate of polaritons. Pump-probe and cw experiments are described in addition. Dressing of the polariton dispersion and bistability of the polariton system due to inter-condensate interactions are discussed. The semiclassical and the quantum theories of these effects are presented and their results analysed. The potential for realization of devices is also discussed.

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