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Journal Article

IR spectra and structures of saturated ruthenium cluster carbonyl cations Run(CO)m+ (n=1-6)

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Yubero Valdivielso,  David
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Kerpal,  Christian
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Schöllkopf,  Wieland       
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Meijer,  Gerard       
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Fielicke,  André       
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Yubero Valdivielso, D., Kerpal, C., Schöllkopf, W., Meijer, G., & Fielicke, A. (2023). IR spectra and structures of saturated ruthenium cluster carbonyl cations Run(CO)m+ (n=1-6). Dalton Transactions, 52(29), 9929-9939. doi:10.1039/D3DT01129A.


Cite as: https://hdl.handle.net/21.11116/0000-000D-604D-1
Abstract
A series of saturated ruthenium cluster carbonyls (Ru(CO)5+ , Ru2(CO)9+ , Ru3(CO)12+ , Ru4(CO)14+ , Ru5(CO)16+ and Ru6(CO)18+ ) has been synthesized in the gas phase and subsequently characterized by infrared spectroscopy. Their size-specific IR spectra in the regions of the carbonyl stretch vibration (1900-2150 cm-1) as well as in the region of the Ru-C-O bending modes (420-620 cm-1) are obtained by infrared multiple photon dissociation spectroscopy. The structures of these cluster carbonyls are assigned by comparison to results from density functional calculations. A multitude of differently activated CO ligands is identified in these cationic cluster carbonyls, reaching from terminal, over non-symmetrically bridging (semi-bridging) ligands with varying degrees of interaction to additional Ru atoms towards symmetrically bridging CO ligands.