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Metal cluster models for heterogeneous catalysis: a matrix-isolation perspective

Metal cluster models are of high relevance for establishing new mechanistic concepts for heterogeneous catalysis. The high reactivity and particular selectivity of metal clusters is caused by the wealth of low-lying electronically excited states that are often thermally populated. Thereby the metal...

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Main Authors: Hübner, Olaf (Author) , Himmel, Hans-Jörg (Author)
Format: Article (Journal)
Language:English
Published: 19 February 2018
In: Chemistry - a European journal
Year: 2018, Volume: 24, Issue: 36, Pages: 8941-8961
ISSN:1521-3765
DOI:10.1002/chem.201706097
Online Access:Verlag, Volltext: https://doi.org/10.1002/chem.201706097
Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201706097
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Author Notes:Olaf Hübner, Hans-Jörg Himmel

MARC

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520 |a Metal cluster models are of high relevance for establishing new mechanistic concepts for heterogeneous catalysis. The high reactivity and particular selectivity of metal clusters is caused by the wealth of low-lying electronically excited states that are often thermally populated. Thereby the metal clusters are flexible with regard to their electronic structure and can adjust their states to be appropriate for the reaction with a particular substrate. The matrix isolation technique is ideally suited for studying excited state reactivity. The low matrix temperatures (generally 4-40 K) of the noble gas matrix host guarantee that all clusters are in their electronic ground-state (with only a very few exceptions). Electronically excited states can then be selectively populated and their reactivity probed. Unfortunately, a systematic research in this direction has not been made up to date. The purpose of this review is to provide the grounds for a directed approach to understand cluster reactivity through matrix-isolation studies combined with quantum chemical calculations. 
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