Photochemically generated reactive sites at ruthenium/gallium complexes: catalysis vs. cluster growth

Raphael Bühler; Maximilian Muhr; Johannes Stephan; Robert A. Wolf; Max Schütz; Christian Gemel; Roland A. Fischer

doi:10.1039/d3dt01847d

Photochemically generated reactive sites at ruthenium/gallium complexes: catalysis vs. cluster growth

Raphael Bühler, Maximilian Muhr, Johannes Stephan, Robert A. Wolf, Max Schütz, Christian Gemel, Roland A. Fischer

Chair of Inorganic and Organometallic Chemistry

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Irradiation of [Ru(GaCp*)₃(SiEt₃)H₃] (1) at 350 nm induces reductive elimination of dihydrogen and triethylsilane and generates unsaturated Ru/Ga species. This photochemically induced cascading reductive elimination processes generate the reactive intermediate [Ru(GaCp*)₃], which can be trapped by diphosphine coordination to yield the stable complex [(dppe)Ru(GaCp*)₃] (4). The photochemically generated RuGa₃ species is catalytically active in the hydrogenation of alkynes, which is further investigated by ¹H NMR and mass spectrometry. Formation of intermetallic Ru/Ga clusters is observed as a competing and for the catalytic activity of the species limiting side reaction.

Original language	English
Pages (from-to)	10905-10910
Number of pages	6
Journal	Dalton Transactions
Volume	52
Issue number	31
DOIs	https://doi.org/10.1039/d3dt01847d
State	Published - 20 Jul 2023

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title = "Photochemically generated reactive sites at ruthenium/gallium complexes: catalysis vs. cluster growth",

abstract = "Irradiation of [Ru(GaCp*)3(SiEt3)H3] (1) at 350 nm induces reductive elimination of dihydrogen and triethylsilane and generates unsaturated Ru/Ga species. This photochemically induced cascading reductive elimination processes generate the reactive intermediate [Ru(GaCp*)3], which can be trapped by diphosphine coordination to yield the stable complex [(dppe)Ru(GaCp*)3] (4). The photochemically generated RuGa3 species is catalytically active in the hydrogenation of alkynes, which is further investigated by 1H NMR and mass spectrometry. Formation of intermetallic Ru/Ga clusters is observed as a competing and for the catalytic activity of the species limiting side reaction.",

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TY - JOUR

T1 - Photochemically generated reactive sites at ruthenium/gallium complexes

T2 - catalysis vs. cluster growth

AU - Bühler, Raphael

AU - Muhr, Maximilian

AU - Stephan, Johannes

AU - Wolf, Robert A.

AU - Schütz, Max

AU - Gemel, Christian

AU - Fischer, Roland A.

PY - 2023/7/20

Y1 - 2023/7/20

N2 - Irradiation of [Ru(GaCp*)3(SiEt3)H3] (1) at 350 nm induces reductive elimination of dihydrogen and triethylsilane and generates unsaturated Ru/Ga species. This photochemically induced cascading reductive elimination processes generate the reactive intermediate [Ru(GaCp*)3], which can be trapped by diphosphine coordination to yield the stable complex [(dppe)Ru(GaCp*)3] (4). The photochemically generated RuGa3 species is catalytically active in the hydrogenation of alkynes, which is further investigated by 1H NMR and mass spectrometry. Formation of intermetallic Ru/Ga clusters is observed as a competing and for the catalytic activity of the species limiting side reaction.

AB - Irradiation of [Ru(GaCp*)3(SiEt3)H3] (1) at 350 nm induces reductive elimination of dihydrogen and triethylsilane and generates unsaturated Ru/Ga species. This photochemically induced cascading reductive elimination processes generate the reactive intermediate [Ru(GaCp*)3], which can be trapped by diphosphine coordination to yield the stable complex [(dppe)Ru(GaCp*)3] (4). The photochemically generated RuGa3 species is catalytically active in the hydrogenation of alkynes, which is further investigated by 1H NMR and mass spectrometry. Formation of intermetallic Ru/Ga clusters is observed as a competing and for the catalytic activity of the species limiting side reaction.

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U2 - 10.1039/d3dt01847d

DO - 10.1039/d3dt01847d

M3 - Article

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AN - SCOPUS:85167333325

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SP - 10905

EP - 10910

JO - Dalton Transactions

JF - Dalton Transactions

IS - 31

ER -

Photochemically generated reactive sites at ruthenium/gallium complexes: catalysis vs. cluster growth

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