Chelating C-metallation of N-phenylpyrazole with rhodium(III) and iridium(III)

Nonoyama, Matsuo

doi:10.1016/s0022-328x(00)89620-5

Cited by 108 publications

(38 citation statements)

References 11 publications

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“…First, commercially available IrCl 3 ·n H 2 O reacts with a slight excess of the desired cyclometalating (often termed also ortho-metalating) ligand (C^N), the most popular of which are substituted 2-phenylpyridines (Hppy) or 1-phenylpyrazoles (Hppz; Figure 11). The reaction is usually carried out in 2-ethoxyethanol at around 120 8C under argon atmosphere for 24 h. [77,78] The product of this reaction is the cyclometalated Ir…”

Section: Synthesis Of Cationic Iridium(iii) Cyclometalated Complexes mentioning

confidence: 99%

Luminescent Ionic Transition‐Metal Complexes for Light‐Emitting Electrochemical Cells

Costa¹,

Ortı́²,

Bolink³

et al. 2012

Angew Chem Int Ed

890

1,107

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Higher efficiency in the end-use of energy requires substantial progress in lighting concepts. All the technologies under development are based on solid-state electroluminescent materials and belong to the general area of solid-state lighting (SSL). The two main technologies being developed in SSL are light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs), but in recent years, light-emitting electrochemical cells (LECs) have emerged as an alternative option. The luminescent materials in LECs are either luminescent polymers together with ionic salts or ionic species, such as ionic transition-metal complexes (iTMCs). Cyclometalated complexes of Ir(III) are by far the most utilized class of iTMCs in LECs. Herein, we show how these complexes can be prepared and discuss their unique electronic, photophysical, and photochemical properties. Finally, the progress in the performance of iTMCs based LECs, in terms of turn-on time, stability, efficiency, and color is presented.

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Section: Synthesis Of Cationic Iridium(iii) Cyclometalated Complexes mentioning

confidence: 99%

Luminescent Ionic Transition‐Metal Complexes for Light‐Emitting Electrochemical Cells

Costa¹,

Ortı́²,

Bolink³

et al. 2012

Angew Chem Int Ed

890

1,107

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“…Für die Reaktionen wird üblicher-weise 24 h in 2-Ethoxyethanol in einer Argonatmosphäre auf etwa 120 8C erhitzt. [77,78] Als Produkte entstehen die cyclometallierten doppelt chloroverbrückten Iridium(III)-Dimere [{(C^N) 2 Ir(m-Cl)} 2 ] (5). In Zweikernkomplexen wie 5 befinden sich die Ir-C-und Ir-C'-Bindungen jeweils in cis-Stellung zueinander, die Ir-N-und Ir-N'-Bindungen hingegen jeweils in trans-Stellung.…”

Section: Synthese Kationischer Cyclometallierter Iridium(iii)-komplexunclassified

Lumineszierende ionische Übergangsmetallkomplexe für leuchtende elektrochemische Zellen

et al. 2012

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Durch die Umsetzung neuer Beleuchtungskonzepte könnte die Verwertung von Energie deutlich effizienter gestaltet werden. Alle derzeit entwickelten Technologien beruhen auf elektrolumineszierenden Festkörpern und lassen sich allgemein als Festkörperbeleuchtung (solid‐state lighting, SSL) einstufen. Die beiden wichtigsten Zweige der SSL‐Technologie sind Leuchtdioden (LEDs) und organische Leuchtdioden (OLEDs), doch seit kurzem bilden auch leuchtende elektrochemische Zellen (LECs) eine Alternative, die als aktive Materialien entweder lumineszierende Polymere in Kombination mit ionischen Salzen oder lumineszierende ionische Spezies wie ionische Übergangsmetallkomplexe (iTMCs) enthalten. Cyclometallierte IrIII‐Komplexe werden bei weitem am häufigsten als iTMCs in LECs verwendet. Hier zeigen wir, wie diese Komplexe hergestellt werden können, und wir diskutieren ihre einzigartigen elektronischen, photophysikalischen und photochemischen Eigenschaften. Schließlich werden die wichtigsten Fortschritte bezüglich Einschaltzeit, Stabilität, Effizienz und Farbe von iTMCs‐LECs präsentiert.

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“…From the results, it is clear that the ortho-positions of phenyl rings are metallated (2). Formula (2) in Figure I Except for the Ds-pyridine complexes, the resonances of the phenyl ring 6-H were observed at ~/> 6.9 ppm.…”

Section: Resultsmentioning

confidence: 94%

“…More detailed investigation on this and similar complexes, however, is required in order to improve our understanding of such a reaction of certain nitrogen compounds. In a previous paper, rhodium(llI) and iridium(Ill) complexes of Hphpz were reported (2). In the present investigation several new complexes derived from the above palladium(ll) complexes and the analogue of N-(p-tolyl)pyrazole (Htlpz) were prepared and characterized.…”

Section: Introductionmentioning

confidence: 88%

Synthesis of organo-platinum(II) and -palladium(II) complexes ofN-phenyl- andN-(p-Tolyl)pyrazole

Nonoyama

Takayanagi

1975

Transition Met Chem

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Chelating C-metallation of N-phenylpyrazole with rhodium(III) and iridium(III)

Cited by 108 publications

References 11 publications

Luminescent Ionic Transition‐Metal Complexes for Light‐Emitting Electrochemical Cells

Luminescent Ionic Transition‐Metal Complexes for Light‐Emitting Electrochemical Cells

Lumineszierende ionische Übergangsmetallkomplexe für leuchtende elektrochemische Zellen

Synthesis of organo-platinum(II) and -palladium(II) complexes ofN-phenyl- andN-(p-Tolyl)pyrazole

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