Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications

The synthesis of cyclometalated osmium complexes is usually more complicated than of other transition metals such as Ni, Pd, Pt, Rh, where cyclometalation reactions readily occur via direct activation of C–H bonds. It differs also from their ruthenium analogs. Cyclometalation for osmium usually occu...

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Main Authors: Ricardo Cerón-Camacho, Manuel A. Roque-Ramires, Alexander D. Ryabov, Ronan Le Lagadec
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/6/1563
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author Ricardo Cerón-Camacho
Manuel A. Roque-Ramires
Alexander D. Ryabov
Ronan Le Lagadec
author_facet Ricardo Cerón-Camacho
Manuel A. Roque-Ramires
Alexander D. Ryabov
Ronan Le Lagadec
author_sort Ricardo Cerón-Camacho
collection DOAJ
description The synthesis of cyclometalated osmium complexes is usually more complicated than of other transition metals such as Ni, Pd, Pt, Rh, where cyclometalation reactions readily occur via direct activation of C–H bonds. It differs also from their ruthenium analogs. Cyclometalation for osmium usually occurs under more severe conditions, in polar solvents, using specific precursors, stronger acids, or bases. Such requirements expand reaction mechanisms to electrophilic activation, transmetalation, and oxidative addition, often involving C–H bond activations. Osmacycles exhibit specific applications in homogeneous catalysis, photophysics, bioelectrocatalysis and are studied as anticancer agents. This review describes major synthetic pathways to osmacycles and related compounds and discusses their practical applications.
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spelling doaj.art-4954fbee18a14f54b979ab2f26bf2e622023-11-21T10:16:28ZengMDPI AGMolecules1420-30492021-03-01266156310.3390/molecules26061563Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, ApplicationsRicardo Cerón-Camacho0Manuel A. Roque-Ramires1Alexander D. Ryabov2Ronan Le Lagadec3CONACyT-Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, Col. San Bartolo Atepehuacán, México D.F. 07730, MexicoInstituto de Química, UNAM, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, Ciudad de México 04510, MexicoDepartment of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USAInstituto de Química, UNAM, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, Ciudad de México 04510, MexicoThe synthesis of cyclometalated osmium complexes is usually more complicated than of other transition metals such as Ni, Pd, Pt, Rh, where cyclometalation reactions readily occur via direct activation of C–H bonds. It differs also from their ruthenium analogs. Cyclometalation for osmium usually occurs under more severe conditions, in polar solvents, using specific precursors, stronger acids, or bases. Such requirements expand reaction mechanisms to electrophilic activation, transmetalation, and oxidative addition, often involving C–H bond activations. Osmacycles exhibit specific applications in homogeneous catalysis, photophysics, bioelectrocatalysis and are studied as anticancer agents. This review describes major synthetic pathways to osmacycles and related compounds and discusses their practical applications.https://www.mdpi.com/1420-3049/26/6/1563osmiumcyclometalationosmium cyclometalated complexosmacyclepincer complexcatalysis
spellingShingle Ricardo Cerón-Camacho
Manuel A. Roque-Ramires
Alexander D. Ryabov
Ronan Le Lagadec
Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications
Molecules
osmium
cyclometalation
osmium cyclometalated complex
osmacycle
pincer complex
catalysis
title Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications
title_full Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications
title_fullStr Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications
title_full_unstemmed Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications
title_short Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications
title_sort cyclometalated osmium compounds and beyond synthesis properties applications
topic osmium
cyclometalation
osmium cyclometalated complex
osmacycle
pincer complex
catalysis
url https://www.mdpi.com/1420-3049/26/6/1563
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AT manuelaroqueramires cyclometalatedosmiumcompoundsandbeyondsynthesispropertiesapplications
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AT ronanlelagadec cyclometalatedosmiumcompoundsandbeyondsynthesispropertiesapplications