Subporpholactone, Subporpholactam, Imidazolosubporphyrin, and Iridium Complexes of Imidazolosubporphyrin: Formation of Iridium Carbene Complexes

2017 ◽  
Vol 130 (1) ◽  
pp. 344-348 ◽  
Author(s):  
Kota Yoshida ◽  
Atsuhiro Osuka
Keyword(s):  
Iridium Complexes ◽  
Carbene Complexes

scholarly journals Catalytic applications of magnetic nanoparticles functionalized using iridium N-heterocyclic carbene complexes

2015 ◽  
Vol 39 (8) ◽  
pp. 6437-6444 ◽  
Author(s):  
Diego Iglesias ◽  
Sara Sabater ◽  
Arturo Azua ◽  
Jose A. Mata
Keyword(s):  
Magnetic Nanoparticles ◽  
Transfer Hydrogenation ◽  
Iridium Complexes ◽  
Carbene Complexes ◽  
Catalytic Materials ◽  
Catalytic Applications

The development of a synthetic modular methodology for the preparation of catalytic materials based on magnetic nanoparticles with iridium complexes and their application to transfer hydrogenation.

Tuning the electrochemiluminescent properties of iridium complexes of N-heterocyclic carbene ligands

2019 ◽  
Vol 48 (2) ◽  
pp. 653-663 ◽  
Author(s):  
Linh M. Quan ◽  
Bradley D. Stringer ◽  
Mohammad A. Haghighatbin ◽  
Johnny Agugiaro ◽  
Gregory J. Barbante ◽  
...  
Keyword(s):  
Iridium Complexes ◽  
Carbene Ligands ◽  
Carbene Complexes ◽  
Spectroscopic Behaviour

A series of electrochemiluminescent iridium(iii) N-heterocyclic carbene complexes have been prepared to tune electrochemical and spectroscopic behaviour.

scholarly journals Carbene iridium complexes for efficient water oxidation: scope and mechanistic insights

2014 ◽  
Vol 7 (7) ◽  
pp. 2316-2328 ◽  
Author(s):  
James A. Woods ◽  
Ralte Lalrempuia ◽  
Ana Petronilho ◽  
Neal D. McDaniel ◽  
Helge Müller-Bunz ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Dft Calculations ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
Spectroscopic Studies ◽  
Iridium Complexes ◽  
Carbene Complexes ◽  
In Operando ◽  
Insight Into

Combined kinetic & in operando spectroscopic studies, factor analysis, and DFT calculations provide insight into the water oxidation reaction catalyzed by operationally homogeneous iridium mesoionic carbene complexes.

Efficient and Versatile Catalytic Systems for the N-Methylation of Primary Amines with Methanol Catalyzed by N-Heterocyclic Carbene Complexes of Iridium

Synthesis ◽  
2018 ◽  
Vol 50 (23) ◽  
pp. 4617-4626 ◽  
Author(s):  
Ken-ichi Fujita ◽  
Genki Toyooka ◽  
Akiko Tuji
Keyword(s):  
Low Temperatures ◽  
Aromatic Amines ◽  
Catalytic Performance ◽  
Aliphatic Amines ◽  
Primary Amines ◽  
Iridium Complexes ◽  
Reaction Conditions ◽  
Catalytic Systems ◽  
Carbene Complexes ◽  
Amine Compounds

Efficient and versatile catalytic systems were developed for the N-methylation of both aliphatic and aromatic primary amines using methanol as the methylating agent. Iridium complexes bearing an N-heterocyclic carbene (NHC) ligand exhibited high catalytic performance for this type of transformation. For aliphatic amines, selective N,N-dimethylation was achieved at low temperatures (50–90 °C). For aromatic amines, selective N-monomethylation and selective N,N-dimethylation were accomplished by simply changing the reaction conditions (presence or absence of a base with an appropriate catalyst). These findings can be used to develop methods for synthesizing useful amine compounds having N-methyl or N,N-dimethyl moieties.

Mechanochemical changes on cyclometalated Ir(iii) acyclic carbene complexes – design and tuning of luminescent mechanochromic transition metal complexes

2020 ◽  
Vol 7 (3) ◽  
pp. 786-794 ◽  
Author(s):  
Jingqi Han ◽  
Kin-Man Tang ◽  
Shun-Cheung Cheng ◽  
Chi-On Ng ◽  
Yuen-Kiu Chun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Carbene Complexes ◽  
New Class

A new class of luminescent cyclometalated Ir(iii) complexes with readily tunable mechanochromic properties derived from the mechanically induced trans-to-cis isomerization have been developed.

Regioselective Gas-Phase n-Butane Transfer Dehydrogenation via Silica-Supported Pincer-Iridium Complexes

2020 ◽  
Author(s):  
Boris Sheludko ◽  
Cristina Castro ◽  
Chaitanya Khalap ◽  
Thomas Emge ◽  
Alan Goldman ◽  
...  
Keyword(s):  
Gas Phase ◽  
Active Site ◽  
Lower Cost ◽  
Open Systems ◽  
Iridium Complexes ◽  
Terminal Olefin ◽  
Molecular Precursors ◽  
Sterically Demanding ◽  
Olefin Production ◽  
Steam Cracking

<b>Abstract:</b> The production of olefins via on-purpose dehydrogenation of alkanes allows for a more efficient, selective and lower cost alternative to processes such as steam cracking. Silica-supported pincer-iridium complexes of the form [(≡SiO-<sup>R4</sup>POCOP)Ir(CO)] (<sup>R4</sup>POCOP = κ<sup>3</sup>-C<sub>6</sub>H<sub>3</sub>-2,6-(OPR<sub>2</sub>)<sub>2</sub>) are effective for acceptorless alkane dehydrogenation, and have been shown stable up to 300 °C. However, while solution-phase analogues of such species have demonstrated high regioselectivity for terminal olefin production under transfer dehydrogenation conditions at or below 240 °C, in open systems at 300 °C, regioselectivity under acceptorless dehydrogenation conditions is consistently low. In this work, complexes <a>[(≡SiO-<i><sup>t</sup></i><sup>Bu4</sup>POCOP)Ir(CO)] </a>(<b>1</b>) and [(≡SiO-<i><sup>i</sup></i><sup>Pr4</sup>PCP)Ir(CO)] (<b>2</b>) were synthesized via immobilization of molecular precursors. These complexes were used for gas-phase butane transfer dehydrogenation using increasingly sterically demanding olefins, resulting in observed selectivities of up to 77%. The results indicate that the active site is conserved upon immobilization.

Metal-N-Heterocyclic Carbene Complexes as Anti-Tumor Agents

2014 ◽  
Vol 21 (10) ◽  
pp. 1220-1230 ◽  
Author(s):  
Chunqi Hu ◽  
Xin Li ◽  
Wei Wang ◽  
Ruoyu Zhang ◽  
Liping Deng
Keyword(s):  
Carbene Complexes

Rhodium(I) N-Heterocyclic Carbene Complexes as Catalysts for Hydroformylation of Olefins: An Overview

2011 ◽  
Vol 8 (5) ◽  
pp. 764-775 ◽  
Author(s):  
Ana R. Almeida ◽  
Andreia F. Peixoto ◽  
Mario J. F. Calvete ◽  
Pedro M. P. Gois ◽  
Mariette M. Pereira
Keyword(s):  
Carbene Complexes
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