Ultraviolet photoelectron spectroscopy on the linear conformer of negatively charged carbon clusters C− (10≤n≤16)

Kohno, Masamichi; Suzuki, Satoru; Shiromaru, H.; Moriwaki, Toshimichi; Achiba, Yohji

doi:10.1016/s0009-2614(97)01273-6

Cited by 36 publications

(37 citation statements)

References 20 publications

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“…Experimental evidence also suggests that n p 15 the conditions for discharge and laser ablation sources can be tuned to enhance the formation of linear over ring for Kohno et al 1998). n ≥ 10…”

Section: Structure Of Carbon Chain Anionsmentioning

confidence: 99%

Reactions of [FORMULA][F][RM]C[/RM][SUP]-[/SUP][INF]n[/INF][/F][/FORMULA] and [FORMULA][F][RM]C[/RM][INF]n[/INF][RM]H[/RM][SUP]-[/SUP][/F][/FORMULA] with Atomic and Molecular Hydrogen

Barckholtz

Snow

Bierbaum

2001

The Astrophysical Journal

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Section: Structure Of Carbon Chain Anionsmentioning

confidence: 99%

Reactions of [FORMULA][F][RM]C[/RM][SUP]-[/SUP][INF]n[/INF][/F][/FORMULA] and [FORMULA][F][RM]C[/RM][INF]n[/INF][RM]H[/RM][SUP]-[/SUP][/F][/FORMULA] with Atomic and Molecular Hydrogen

Barckholtz

Snow

Bierbaum

2001

The Astrophysical Journal

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“…1,5-9, 63,68-70 Although most of these experiments find evidence for linear species, there is some recent electronic spectroscopy that finds evidence for cyclic C 12 and C 14 . 69 Photoelectron spectroscopy 74 and resonance enhanced photodetachment spectroscopy 72 have investigated the anions. Ion mobility measurements on the cations finds evidence for only the cyclic species.…”

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confidence: 99%

Ionization Thresholds of Small Carbon Clusters: Tunable VUV Experiments and Theory

et al. 2007

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Small carbon clusters (C n , n=2-15) are produced in a molecular beam by pulsed laser vaporization and studied with vacuum ultraviolet (VUV) photoionization mass spectrometry.The required VUV radiation in the 8-12 eV range is provided by the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory. Mass spectra at various ionization energies reveal the qualitative relative abundances of the neutral carbon clusters produced. By far the most abundant species is C 3 . Using the tunability of the ALS, ionization threshold spectra are recorded for the clusters up to 15 atoms in size. The ionization thresholds are compared to those measured previously with charge transfer bracketing methods. To interpret the ionization thresholds for different cluster sizes, new ab initio calculations are carried out on the clusters for n=4-10. Geometric structures are optimized at the CCSD(T) level with cc-pVTZ (or cc-pVDZ) basis sets, and focal point extrapolations are applied to both neutral and cation species to 2 determine adiabatic and vertical ionization potentials. The comparison of computed and measured ionization potentials makes it possible to investigate the isomeric structures of the neutral clusters produced in this experiment. The measurements are inconclusive for the n=4-6 species because of unquenched excited electronic states. However, the data provide evidence for the prominence of linear structures for the n = 7, 9, 11, 13 species and the presence of cyclic C 10 .

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“…In our previous paper we have shown a strong correlation of the laser vaporization conditions with the structure of anions in the beam source, revealed by ultraviolet photoelectron spectra. 16 The photoelectron bands assigned to the chain conformer appeared only when the high fluence laser was used for vaporization, which gave the magic numbers 5, 8, 11. Thus, we have concluded that high fluence laser vaporization gives both the linear chain and the monocyclic ring as the main isomers of the small carbon cluster anions of nу10, and lower fluence laser gives mainly the monocyclic ring for these cluster sizes.…”

Section: Resultsmentioning

confidence: 99%

Resonance-enhanced multiphoton electron detachment (REMPED) spectra of C10− and C11−

Ohara

Suwa

Ishigaki

et al. 1998

The Journal of Chemical Physics

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Articles you may be interested inAl 4 − cluster anion: Electronic structure, excited states, and electron detachment J. Chem. Phys. 132, 124305 (2010); 10.1063/1.3366520 Pseudopotential and electron propagator methods for the calculation of the photoelectron spectra of anionic silicon clusters: Predictions on Si 10 − We report on resonance-enhanced multiphoton electron detachment ͑REMPED͒ spectra of C 10 Ϫ and C 11Ϫ . Both species were obtained by laser evaporation of graphite in a flow of helium. The spectra obtained under several different evaporation conditions suggest that both anions occur as well in a ring as in a chain form. The ring form dominates at low laser fluences. For the species C 10 Ϫ , our data indicate a third isomeric form which may consist of a somehow distorted ring structure.

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Ultraviolet photoelectron spectroscopy on the linear conformer of negatively charged carbon clusters C− (10≤n≤16)

Cited by 36 publications

References 20 publications

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Reactions of [FORMULA][F][RM]C[/RM][SUP]-[/SUP][INF]n[/INF][/F][/FORMULA] and [FORMULA][F][RM]C[/RM][INF]n[/INF][RM]H[/RM][SUP]-[/SUP][/F][/FORMULA] with Atomic and Molecular Hydrogen

Ionization Thresholds of Small Carbon Clusters: Tunable VUV Experiments and Theory

Resonance-enhanced multiphoton electron detachment (REMPED) spectra of C10− and C11−

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