Resonance-enhanced multiphoton ionisation spectroscopy of jet-cooled bis(η6-benzene)chromium

Ketkov, Sergey Yu.; Selzle, H. L.; Schlag, E. W.; Домрачев, Г. А.

doi:10.1016/s0009-2614(03)00638-9

Cited by 21 publications

(34 citation statements)

References 26 publications

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“…Very recently we have demonstrated that REMPI spectroscopy is applicable for studying the 3d z 2 → R4p x,y transition of 1. 17 Here we report the first multiphoton ZEKE-MATI spectra of jet-cooled 1. In our experiment, the 1 molecule is excited by a tuneable dye laser to the R4p x,y Rydberg state.…”

Section: Introductionmentioning

confidence: 93%

Study of Jet‐Cooled Bis(η⁶‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Ketkov¹,

Selzle²,

Schlag³

2004

Israel Journal of Chemistry

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Zero kinetic energy‐mass‐analyzed threshold ionization (ZEKE‐MATI) spectra of jet‐cooled (η6‐C6H6)2Cr have been obtained for the first time with use of the 3dz2 → R4px,y Rydberg transition as the initial step of the electronic excitation. The ionization potential of (η6‐C6H6)2Cr determined on the basis of the ZEKE‐MATI experiment is 44087 ± 3 cm−1 (5.4661 ± 0.0004 eV). The binding energy of the R4px,y electron is 17333 ± 3 cm−1. The frequencies of the symmetric metal‐ring stretching vibration and CH umbrella vibration in the gas‐phase ground‐state molecular cation (η6‐C6H6)2Cr+ are 262 ± 5 and 788 ± 4 cm−1, respectively.

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Section: Introductionmentioning

confidence: 93%

Study of Jet‐Cooled Bis(η⁶‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Ketkov¹,

Selzle²,

Schlag³

2004

Israel Journal of Chemistry

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“…Transition-metal complexes with benzene or its derivatives are true classics among organometallic compounds, and many of benzene-containing metal complexes have been identified as crucial intermediates in homogeneous catalysis of organic reactions. , Metal–benzene complexes have thus attracted considerable interest in gas-phase chemistry and spectroscopy. Some of these studies include laser photodissociation, − photoionization, − photoelectron detachment, ,− photoelectron–photoion coincidence, collision-induced dissociation, − ion mobility, magnetic , and dipole moments, and reactivity measurements. , A large number of computational studies have also been reported on structures and energetics of metal–benzene systems. − …”

Section: Introductionmentioning

confidence: 99%

Low-Energy Photoelectron Imaging Spectroscopy of La_n(benzene) (n = 1 and 2)

2017

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La(benzene) (n = 1 and 2) are formed in a pulsed laser-ablation molecular beam source and characterized by low-energy photoelectron imaging spectroscopy. The photoelectron spectrum of La(benzene) displays a strong origin band, a short metal-ligand stretching progression, and a weak ring deformation band. Four isomers are considered for La(benzene), and the preferred structure is an inverse sandwich with two La atoms residing on the opposite sides of the benzene ring. The ground electronic state of the inverse sandwich is A (D) with (5d + π*)6s electron configuration. Ionization removes a La-based 6s electron and yields a A ion. The spectrum of La(benzene) is similar to the zero-electron kinetic energy spectrum reported previously by our group, although the spectral line width is somewhat broader. The measurement of the photoelectron angular distribution of La(benzene) confirms that the ejected electron has largely a p wave character. The metal-ligand bonding of La(benzene) is considerably stronger than that of La(benzene) due to the threefold binding of each La atom in the dilanthanum species and the twofold binding in the monolanthanum complex.

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“…Because they are 18-electron, coordinately saturated compounds and can be used as stable precursors, group 6 M–bis(arene) (M = Cr, Mo, and W) complexes have received the most attention among the metal sandwiches in gas-phase chemistry and spectroscopy. Most of the earlier gas-phase work focused on the measurements of the ionization energies of the complexes using photoelectron spectroscopy or mass spectrometry. − More recently, the gas-phase measurements have been extended to collision-induced dissociation, radiative association kinetics, ultraviolet photoabsorption, ,− photoionization efficiency (PIE), resonance-enhanced multiphoton, − mass-analyzed threshold ionization (MATI), − and pulsed-field ionization zero-electron kinetic energy (ZEKE) , spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Electron Spectroscopy and Rotational Conformers of Group 6 Metal (Cr, Mo, and W) Bis(mesitylene) Sandwich Complexes

Kumari

Yang

2013

J. Phys. Chem. A

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Group 6 metal-bis(mesitylene) sandwich complexes are produced by interactions between the laser-vaporized metal atoms and mesitylene vapor in a pulsed molecular beam source, identified by photoionization time-of-flight mass spectrometry, and studied by pulsed-field ionization zero-electron kinetic energy spectroscopy and density functional theory calculations. Although transition metal-bis(arene) sandwich complexes may adopt eclipsed and staggered conformations, the group 6 metal-bis(mesitylene) complexes are determined to be in the eclipsed form. In this form, rotational conformers with methyl group dihedral angles of 0 and 60° are identified for the Cr complex, whereas the 0° rotamer is observed for the Mo and W species. The 0° rotamer is in a C(2v) symmetry with the neutral ground state of (1)A1 and the singly positive charged ion state of (2)A1. The 60° rotamer is in a C(i) symmetry with the neutral ground state of (1)A(g) and the ion state of (2)A(g). Partial conversion of the 60 to 0° rotamer is observed from He to He/Ar supersonic expansion for Cr-bis(mesitylene). The unsuccessful observation of the 60° rotamer for the Mo and W complexes is the result of its complete conversion to the 0° rotamer in both He and He/Ar expansions. The adiabatic ionization energies of the 0° rotamers of the three complexes are in the order of Cr-bis(mesitylene) < W-bis(mesitylene) < Mo-bis(mesitylene), which is different from that of the metal atoms. These metal-bis(mesitylene) complexes have lower ionization energies than the corresponding metal-bis(benzene) and -bis(toluene) species.

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Resonance-enhanced multiphoton ionisation spectroscopy of jet-cooled bis(η6-benzene)chromium

Cited by 21 publications

References 26 publications

Study of Jet‐Cooled Bis(η⁶‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Study of Jet‐Cooled Bis(η⁶‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Low-Energy Photoelectron Imaging Spectroscopy of La_n(benzene) (n = 1 and 2)

High-Resolution Electron Spectroscopy and Rotational Conformers of Group 6 Metal (Cr, Mo, and W) Bis(mesitylene) Sandwich Complexes

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Resonance-enhanced multiphoton ionisation spectroscopy of jet-cooled bis(η6-benzene)chromium

Cited by 21 publications

References 26 publications

Study of Jet‐Cooled Bis(η6‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Study of Jet‐Cooled Bis(η6‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Low-Energy Photoelectron Imaging Spectroscopy of Lan(benzene) (n = 1 and 2)

High-Resolution Electron Spectroscopy and Rotational Conformers of Group 6 Metal (Cr, Mo, and W) Bis(mesitylene) Sandwich Complexes

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Study of Jet‐Cooled Bis(η⁶‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Study of Jet‐Cooled Bis(η⁶‐Benzene)Chromium by Multiphoton Zero Kinetic Energy—Mass‐Analyzed Threshold Ionization Spectroscopy

Low-Energy Photoelectron Imaging Spectroscopy of La_n(benzene) (n = 1 and 2)