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

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.

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

Dalton Transactions ◽

10.1039/c8dt04433c ◽

2019 ◽

Vol 48 (2) ◽

pp. 653-663 ◽

Cited By ~ 11

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.

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

Energy & Environmental Science ◽

10.1039/c4ee00971a ◽

2014 ◽

Vol 7 (7) ◽

pp. 2316-2328 ◽

Cited By ~ 87

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.

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

Angewandte Chemie ◽

10.1002/ange.201711166 ◽

2017 ◽

Vol 130 (1) ◽

pp. 344-348 ◽

Cited By ~ 5

Author(s):

Kota Yoshida ◽

Atsuhiro Osuka

Keyword(s):

Iridium Complexes ◽

Carbene Complexes

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

Synthesis ◽

10.1055/s-0037-1610252 ◽

2018 ◽

Vol 50 (23) ◽

pp. 4617-4626 ◽

Cited By ~ 8

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.

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

Inorganic Chemistry Frontiers ◽

10.1039/c9qi01278h ◽

2020 ◽

Vol 7 (3) ◽

pp. 786-794 ◽

Cited By ~ 3

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.

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

10.26434/chemrxiv.12885491.v1 ◽

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

Abstract: 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-R4POCOP)Ir(CO)] (R4POCOP = κ3-C6H3-2,6-(OPR2)2) 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-tBu4POCOP)Ir(CO)] </a>(1) and [(≡SiO-iPr4PCP)Ir(CO)] (2) 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.

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