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2,852 Newest Publications about the topic iridium

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Preparation of polynuclear NHC complexes by post-synthetic modification of half-sandwich rhodium and iridium complexes bearing C-azolato ligands

03-Jul-2018 | Francisco Aznarez; Wen-Xi Gao; Yue-Jian Lin; F. Ekkehardt Hahn; Guo-Xin Jin, Dalton Transactions, 2018

A series of bimetallic and trimetallic complexes has been prepared by N-alkylation of mononuclear half-sandwich rhodium and iridium di-NHC complexes featuring bidentate chelate ligands composed of a classical NHC and a C-azolato donor. The shape and the separation between metal centers in the ...

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An elusive thermal [2 + 2] cycloaddition driven by visible light photocatalysis: tapping into strain to access C2-symmetric tricyclic rings

03-Jul-2018 | Kamaljeet Singh; Winston Trinh; Jimmie D. Weaver, Organic & Biomolecular Chemistry, 2018

A mild and operationally simple methodology is reported for the synthesis of cyclobutane rings imbedded within a C2-symmetric tricyclic framework. The method uses visible light and an iridium-based photocatalyst to drive the oft-stated “forbidden” thermal [2 + 2] cycloaddition of cycloheptenes ...

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Iridium-catalysed primary alcohol oxidation and hydrogen shuttling for the depolymerisation of lignin

26-Jun-2018 | Christopher S Lancefield; Lucas Teunissen; Bert Weckhuysen; Pieter C A Bruijnincx, Green Chemistry, 2018

Lignin is a potentially abundant renewable resource for the production of aromatic chemicals, however its selective depolymerisation is challenging. Here, we report a new catalytic system for the depolymerisation of lignin to novel, non-phenolic monoaromatic products based on the selective β -O-4 ...

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A phosphorescent cyclometalated iridium(III) complex as mitochondria-targeted theranostic anticancer agent

24-Jun-2018 | Author(s): Qiumiao Xiao, Zizhuo Zhao, Ke Lin, Jinquan Wang, Inorganic Chemistry Communications, 2018

Publication date: August 2018 Source:Inorganic Chemistry Communications, Volume 94 Author(s): Qiumiao Xiao, Zizhuo Zhao, Ke Lin, Jinquan Wang In the present study, a cyclometalated iridium(III) complex, [Ir(ppy)2(HPIP)]Cl (IrT, ppy = 2-phenylpyridine, ...

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Anticancer activity of complexes of the third row transition metals, rhenium, osmium, and iridium

20-Jun-2018 | Chilaluck C. Konkankit; Sierra C. Marker; Kevin M. Knopf; Justin J. Wilson, Dalton Transactions, 2018

The clinical success of the platinum-based chemotherapeutic agents has prompted the investigation of coordination and organometallic complexes of alternative metal centers for use as anticancer agents. Among these alternatives, the third row transition metal neighbors of platinum on the periodic ...

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Sensors, Vol. 18, Pages 1953: Polystyrene Oxygen Optodes Doped with Ir(III) and Pd(II) meso-Tetrakis(pentafluorophenyl)porphyrin Using an LED-Based High-Sensitivity Phosphorimeter

15-Jun-2018 | Filho, Alexandre F. De Moraes; Gewehr, Pedro M.; Maia, Joaquim M.; Jakubiak, Douglas R., Sensors, 2018

Sensors, Vol. 18, Pages 1953: Polystyrene Oxygen Optodes Doped with Ir(III) and Pd(II) meso-Tetrakis(pentafluorophenyl)porphyrin Using an LED-Based High-Sensitivity Phosphorimeter Sensors doi: 10.3390/s18061953 Authors: Alexandre Filho Pedro Gewehr Joaquim Maia Douglas ...

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1,10-Phenanthroline-dithiine iridium and ruthenium complexes: Synthesis, characterization and photocatalytic dihydrogen evolution

12-Jun-2018 | Elisa Erdmann; Alexander Villinger; Burkhard Koenig; Wolfram Willy Seidel, Photochemical & Photobiological Sciences, 2018

We report the synthesis and the spectroscopic and electrochemical properties of six mononuclear iridium(III) and ruthenium(II) complexes bearing S,S’-extended phenanthroline ligands. Starting from 5,6-dibromide-1,10-phenanthroline the dithiine derivatives ...

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Efficient yellow electroluminescence of four iridium(III) complexes with benzo[d]thiazole derivatives as main ligands

12-Jun-2018 | Zhi-Gang Niu; Jun Chen; Peng Tan; Wei Sun; You-Xuan Zheng; Gao-Nan Li; Jing-Lin Zuo, Dalton Transactions, 2018

Four bis-cyclometalated iridium(iii) complexes, (bt)2Ir(tpip), (fbt)2Ir(tpip), (cf3bt)2Ir(tpip) and (dfbt)2Ir(tpip) (bt = 2-phenylbenzo[d]thiazole, fbt = 6-fluoro-2-phenylbenzo[d]thiazole, cf3bt = 2-phenyl-6-(trifluoromethyl)benzo[d]thiazole, dfbt = 5,7-difluoro-2-phenylbenzo[d]thiazole, tpip = ...

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Synthesis of di- and trinuclear iridium polyhydride complexes surrounded by light-absorbing ligands

12-Jun-2018 | Shoji Shitaya; Kotohiro Nomura; Akiko Inagaki, Dalton Transactions, 2018

New di- and trinuclear iridium (Ir) penta- and hexahydride complexes containing light-absorbing diphosphine ligands have been developed. The trinuclear Ir complex possessed a higher absorption coefficient (standardized per Ir) than that of the parent mononuclear Ir complex, indicating the ...

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An investigation on the second-order nonlinear optical response of cationic bipyridine or phenanthroline iridium(III) complexes bearing cyclometallated 2-phenylpyridines with a triphenylamine substituent.

06-Jun-2018 | Claus Hierlinger; David Bradford Cordes; Alexandra Slawin; Alessia Colombo; Claudia Dragonetti; Stefania Righetto; D ..., Dalton Transactions, 2018

The synthesis and characterisation of six new cationic iridium(III) complexes bearing either 4,4’-ditert-butyl-2,2’-bipyridine (dtBubpy) or 5-NO2-1,10-phenanthroline along with two cyclometallated 2-phenylpyridine derivative ligands, decorated with triphenylamine groups either meta or para to ...

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