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Fielicke A. Probing the binding and activation of small molecules by gas-phase transition metal clusters via IR spectroscopy. Chem Soc Rev 2023. [PMID: 37162518 DOI: 10.1039/d2cs00104g] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Isolated transition metal clusters have been established as useful models for extended metal surfaces or deposited metal particles, to improve the understanding of their surface chemistry and of catalytic reactions. For this objective, an important milestone has been the development of experimental methods for the size-specific structural characterization of clusters and cluster complexes in the gas phase. This review focusses on the characterization of molecular ligands, their binding and activation by small transition metal clusters, using cluster-size specific infrared action spectroscopy. A comprehensive overview and a critical discussion of the experimental data available to date is provided, reaching from the initial results obtained using line-tuneable CO2 lasers to present-day studies applying infrared free electron lasers as well as other intense and broadly tuneable IR laser sources.
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Affiliation(s)
- André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany.
- Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany
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Lang SM, Bernhardt TM, Bakker JM, Yoon B, Landman U. Vibrational spectroscopy of free di-manganese oxide cluster complexes with di-hydrogen. Mol Phys 2023. [DOI: 10.1080/00268976.2023.2192306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Sandra M. Lang
- Institute for Surface Chemistry and Catalysis, University of Ulm, Ulm, Germany
| | | | - Joost M. Bakker
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Nijmegen, The Netherlands
| | - Bokwon Yoon
- School of Physics, Georgia Institute of Technology, Atlanta, USA
| | - Uzi Landman
- School of Physics, Georgia Institute of Technology, Atlanta, USA
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Corinti D, Maccelli A, Chiavarino B, Schütz M, Bouchet A, Dopfer O, Crestoni ME, Fornarini S. Cation-π Interactions between a Noble Metal and a Polyfunctional Aromatic Ligand: Ag + (benzylamine). Chemistry 2022; 28:e202200300. [PMID: 35412692 PMCID: PMC9325466 DOI: 10.1002/chem.202200300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Indexed: 12/21/2022]
Abstract
The structure of an isolated Ag+ (benzylamine) complex is investigated by infrared multiple photon dissociation (IRMPD) spectroscopy complemented with quantum chemical calculations of candidate geometries and their vibrational spectra, aiming to ascertain the role of competing cation-N and cation-π interactions potentially offered by the polyfunctional ligand. The IRMPD spectrum has been recorded in the 800-1800 cm-1 fingerprint range using the IR free electron laser beamline coupled with an FT-ICR mass spectrometer at the Centre Laser Infrarouge d'Orsay (CLIO). The resulting IRMPD pattern points toward a chelate coordination (N-Ag+ -π) involving both the amino nitrogen atom and the aromatic π-system of the phenyl ring. The gas-phase reactivity of Ag+ (benzylamine) with a neutral molecular ligand (L) possessing either an amino/aza functionality or an aryl group confirms N- and π-binding affinity and suggests an augmented silver coordination in the product adduct ion Ag + ( benzylamine ) ( L ) .
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Affiliation(s)
- Davide Corinti
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, I-00185, Roma, Italy
| | - Alessandro Maccelli
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, I-00185, Roma, Italy
| | - Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, I-00185, Roma, Italy
| | - Markus Schütz
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany.,present address: Eagleyard Photonics GmbH, Rudower Chaussee 29, 12489, Berlin, Germany
| | - Aude Bouchet
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany.,present address: Université Lille LASIRE Lab Adv Spect Interact React & Environm Cite Sci, CNRS, UMR 8516, 59000, Lille, France
| | - Otto Dopfer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, I-00185, Roma, Italy
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, I-00185, Roma, Italy
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Förstel M, Pollow KM, Saroukh K, Najib EA, Mitric R, Dopfer O. The Optical Spectrum of Au
2
+. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011337] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marko Förstel
- Technische Universität Berlin Hardenbergstr. 36 10623 Berlin Germany
| | - Kai Mario Pollow
- Technische Universität Berlin Hardenbergstr. 36 10623 Berlin Germany
| | - Karim Saroukh
- Technische Universität Berlin Hardenbergstr. 36 10623 Berlin Germany
| | - Este Ainun Najib
- Technische Universität Berlin Hardenbergstr. 36 10623 Berlin Germany
| | - Roland Mitric
- Julius-Maximilians-Universität Würzburg Institut für Physikalische und Theoretische Chemie Emil-Fischer-Str. 42 97074 Würzburg Germany
| | - Otto Dopfer
- Technische Universität Berlin Hardenbergstr. 36 10623 Berlin Germany
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Förstel M, Pollow KM, Saroukh K, Najib EA, Mitric R, Dopfer O. The Optical Spectrum of Au 2. Angew Chem Int Ed Engl 2020; 59:21403-21408. [PMID: 32888257 PMCID: PMC7756737 DOI: 10.1002/anie.202011337] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Indexed: 11/08/2022]
Abstract
The electronic structure of the Au2 + cation is essential for understanding its catalytic activity. We present the optical spectrum of mass-selected Au2 + measured via photodissociation spectroscopy. Two vibrationally resolved band systems are observed in the 290-450 nm range (at ca. 440 and ca. 325 nm), which both exhibit rather irregular structure indicative of strong vibronic and spin-orbit coupling. The experimental spectra are compared to high-level quantum-chemical calculations at the CASSCF-MRCI level including spin-orbit coupling. The results demonstrate that the understanding of the electronic structure of this simple, seemingly H2 + -like diatomic molecular ion strictly requires multireference and relativistic treatment including spin-orbit effects. The calculations reveal that multiple electronic states contribute to each respective band system. It is shown that popular DFT methods completely fail to describe the complex vibronic pattern of this fundamental diatomic cation.
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Affiliation(s)
- Marko Förstel
- Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany
| | - Kai Mario Pollow
- Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany
| | - Karim Saroukh
- Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany
| | - Este Ainun Najib
- Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany
| | - Roland Mitric
- Julius-Maximilians-Universität Würzburg, Institut für Physikalische und Theoretische Chemie, Emil-Fischer-Str. 42, 97074, Würzburg, Germany
| | - Otto Dopfer
- Technische Universität Berlin, Hardenbergstr. 36, 10623, Berlin, Germany
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