Fez+ (z = 1–6) generation from ferrocene

Yatsuhashi, Tomoyuki; Murakami, Eri; Nakashima, Nobuaki

doi:10.1039/c0cp02122a

Cited by 6 publications

(22 citation statements)

References 44 publications

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“…Mass spectrum of Fe(CO) 5 doped SF 6 clusters at 1,064 nm. & Nakashima, 2010;Yatsuhashi, Marukami, & Nakashima, 2011;Dota et al, 2012). This work demonstrates that even low intensity nanosecond laser pulses ($10 9 W/cm 2 ) can efficiently generate multiply charged atomic ions, upon irradiation of organometallic clusters.…”

Section: Discussionmentioning

confidence: 76%

“…These two parameters can significantly affect the charge state as well as the total number density of the ions generated by the photoionization processes. The work of Yatsuhasi et al and Dota et al reports generation of multiply charged atomic ion (such as Si 4+ and Fe 6+ ) upon exposure of organometallic monomers to femtosecond laser pulses of intensity ∼10 15 W/cm 2 (Yatsuhashi & Nakashima, ; Yatsuhashi, Marukami, & Nakashima, ; Dota et al, ). This work demonstrates that even low intensity nanosecond laser pulses (∼10 9 W/cm 2 ) can efficiently generate multiply charged atomic ions, upon irradiation of organometallic clusters.…”

Section: Discussionmentioning

confidence: 99%

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Mass spectrometric and charge density studies of organometallic clusters photoionized by gigawatt laser pulses

Badani

Das

Sharma

et al. 2015

Mass Spectrometry Reviews

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Clusters on exposure to nanosecond laser pulses of gigawatt intensity exhibit a variety of photo-chemical processes such as fragmentation, intracluster reaction, ionization, Coulomb explosion, etc. Present article summarizes the experimental results obtained in our laboratory utilizing time-of-flight mass spectrometer which deal with one such aspect of cluster photochemistry related to generation of multiply charged atomic ions upon excessive ionization of cluster constituents (Coulomb explosion) at low intensity laser field (∼10 W/cm ). To understand the mechanism of laser-cluster interaction, laser as well as cluster parameters were varied. Mass spectrometric studies were carried out at different laser wavelength as well as varying the nature of cluster constituents, backup pressure, nozzle diameter, etc. In addition, charge density measurements were also preformed to get information about the total number of ions generated upon laser-cluster interaction as a function of laser wavelength. In case of pure molecular clusters, the charge state of atomic ions as well as charge density was observed to enhance with increasing laser wavelength, signifying efficient coupling of the cluster medium with nanosecond laser pulse at longer wavelength. While in case of clusters doped with species having comparatively lower ionization energy, the efficiency of laser-cluster interaction was less, in contrast to studies carried out using femtosecond lasers. Results obtained in the present work have been rationalized on the basis of proposed three-stage cluster ionization mechanism, that is, multiphoton ionization ignited-inverse Bremsstrahlung heating and electron ionization. © 2015 Wiley Periodicals, Inc. Mass Spec Rev. 36:188-212, 2017.

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Section: Discussionmentioning

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Mass spectrometric and charge density studies of organometallic clusters photoionized by gigawatt laser pulses

Badani

Das

Sharma

et al. 2015

Mass Spectrometry Reviews

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“…46 At comparable laser intensities to this work, Yatsuhashi et al found single ring loss to be around an order of magnitude less likely than double ring loss in the asymptotic limit of microsecond scale detection times. 19 The authors assumed that a sequential dissociation mechanism may account for the preference for double ring loss. The results presented here, however, suggest that the preference may instead be due to a very fast dissociation mechanism involving both rings, potentially because it is so easy to break the bond between the iron atom and the second ring.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, Yatsuhashi and co-workers have demonstrated that strong field ionization of gaseous FeCp 2 with a femtosecond NIR pulse yields multiply charged Fe n+ ions. 19 Using time-offlight mass spectrometry, the authors found that, as the NIR intensity is increased beyond 1 × 10 15 W cm −2 , Fe ions with charge states as high as Fe 6+ are observed. Intriguingly, dissociation leading to the loss of a single cyclopentadienyl ring was a minor channel compared to double ring loss.…”

Section: Introductionmentioning

confidence: 99%

“…The results complement previous mass spectrometry experiments that, while elegantly demonstrating the efficient production of highly charged iron ions from a ferrocene precursor, provide limited insight into the detailed dissociation mechanisms. 19 We first explore the XUV spectra of ferrocenium cations, which we assign with the aid of time-dependent density functional theory calculations. The observed iron 3p absorption spectrum of ferrocenium is composed of both 2 FeCp 2 + and 4 FeCp 2 + spin states.…”

Section: Introductionmentioning

confidence: 99%

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Dissociation Dynamics and Electronic Structures of Highly Excited Ferrocenium Ions Studied by Femtosecond XUV Absorption Spectroscopy

et al. 2016

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The dissociation dynamics of ferrocene are explored following strong field ionization using femtosecond time-resolved extreme ultraviolet (XUV) transient absorption spectroscopy. Employing transitions in the vicinity of the iron 3p (M) edge, the dissociation is monitored from the point of view of the iron atom. With low strong field pump intensities (≈2 × 10 W cm), only ferrocenium cations are produced, and their iron 3p absorption spectrum is reported. It very closely resembles the 3p spectrum of atomic Fe ions but is red-shifted by 0.8 eV. With the aid of time-dependent density functional theory calculations, the spectrum is assigned to a combination of doublet and quartet spin states of ferrocenium ions. Ionization with more intense strong field pump pulses (≥6 × 10 W cm) leads predominantly to the prompt production of ferrocenium ions that dissociate to give the spectral signature of bare Fe ions within 240 ± 80 fs. Within the temporal resolution of the experiment (≈40 fs), no spectral intermediates are observed, suggesting that the dissociation process occurs directly from the excited ferrocenium ion and that the bonds between the iron center and both cyclopentadienyl rings are broken almost simultaneously in an asynchronous concerted decay process. No evidence of slower dissociation channels is observed at a pump-probe delay of 250 ps, suggesting that all energy is very rapidly routed into dissociative states.

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Multiply charged energetic metal ion emissions from dinuclear metal complex exposed to intense femtosecond laser fields

Matsumoto

Tanaka

Nakashima

et al. 2020

International Journal of Mass Spectrometry

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Coulomb explosion of nonmetal ions emerged from a variety of molecules has been studied and utilized for the determination of molecular structure and reaction dynamics. In contrast, Coulomb explosion of metal ions, particularly the large Coulombic interactions are expected,has not yet been explored. In this study, the angular distributions of Mn x+ (x = 1-5), C y+ (y = 1-4), and O z+ (z = 1-3) emerged from dimanganese decacarbonyl, in which two metal atoms are sandwiched by axial ligands, exposed to intense femtosecond laser fields (1×10 14 -3×10 15 W cm −2 ) are investigated. Manganese ions are produced at relatively low laser intensity compared with other transition metal ions with the same charge number but emerged from mononuclear complexes such as metallocenes and metal hexacarbonyls. The kinetic energies of Mn 4+ and Mn 5+ are described by the simple Coulomb repulsion model of manganese dimer ion. Fairly high kinetic energy of oxygen and carbon ions compared with those emerged from metal hexacarbonyls strongly suggests that atomic ions originating in ligands are repelled by manganese ions at the moment of Coulomb explosion. The use of dinuclear metal complex is advantageous in the production of multiply charged metal ions accompanying high kinetic energy since two manganese ions are in close confinement due to the repulsions with axial ligand (atomic) ions.

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Fez+ (z = 1–6) generation from ferrocene

Cited by 6 publications

References 44 publications

Mass spectrometric and charge density studies of organometallic clusters photoionized by gigawatt laser pulses

Mass spectrometric and charge density studies of organometallic clusters photoionized by gigawatt laser pulses

Dissociation Dynamics and Electronic Structures of Highly Excited Ferrocenium Ions Studied by Femtosecond XUV Absorption Spectroscopy

Multiply charged energetic metal ion emissions from dinuclear metal complex exposed to intense femtosecond laser fields

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