Icosahedral shell structure in metal-doped rare gas clusters

Schriver, K. E.; Hahn, M. Y.; Persson, John L.; LaVilla, Michael E.; Whetten, Robert L.

doi:10.1021/j100345a001

Cited by 36 publications

(24 citation statements)

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“…This trend has been noted for other metal complex systems. 14 The mass spectrum shown here is only observed when both indium and molecular nitrogen are used in the experiment, with nozzle conditions adjusted for the production of extremely cold complexes. This fact, the observation of masses which indicate indium plus multiples of the N 2 mass, and the efficient ionization at such a low energy all indicate that we have indeed produced the desired van der Waals complexes of the form In-͑N 2 ͒ x .…”

Section: Resultsmentioning

confidence: 95%

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Photoionization spectroscopy of the In–N2 van der Waals complex

Brock

Duncan

1995

The Journal of Chemical Physics

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Vibronic structure of the cyclopentadienyl radical and its nonrigid van der Waals cluster with nitrogen A vibrationally resolved electronic spectrum is observed for the metal atom van der Waals complex In-N 2 . Two electronic band systems are detected with mass resolved two-color photoionization spectroscopy. A lower energy system is observed slightly to the blue of the In ͑ 2 D← P͒ atomic asymptote. It is characterized by a progression in the In-N 2 stretching mode with a frequency of e Јϭ76.7 cm Ϫ1 . The higher energy system is slightly to the blue of the In ͑ 4 P← 2 P͒ asymptote. It also exhibits a progression in the In-N 2 stretch with a frequency of e Јϭ87.7 cm Ϫ1 . Extrapolation of the vibrational progressions leads to determination of the excited state dissociation energies. Energetic cycles based on the electronic transition energies, excited state dissociation energies, and atomic asymptotes lead to a determination of the ground state dissociation energy of D 0 Љϭ1519 cm Ϫ1 ͑0.188 eV͒. A single-photon photoionization experiment determines the ionization potential to be 43 372 cm Ϫ1 ͑5.377 eV͒. This IP value, together with the atomic IP and the ground state neutral dissociation energy, yields a dissociation energy of D 0 Љϭ4817 cm Ϫ1 ͑0.597 eV͒ for the In ϩ -N 2 ion-molecule complex.

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Section: Resultsmentioning

confidence: 95%

“…Rare gas atom van der Waals complexes have been reported previously for the Group III A metals boron, 19 aluminum, [13][14][15][16][17][18] gallium, 20 indium, 22 and thallium. 21 However, there are few reports of van der Waals complexes for these, or any other, metal atoms with molecular nitrogen.…”

Section: Introductionmentioning

confidence: 88%

Photoionization spectroscopy of the In–N2 van der Waals complex

Brock

Duncan

1995

The Journal of Chemical Physics

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“…22 Larger AlAr n clusters have been studied through threshold photoionization. 23 The dependence on the number of ligands n of the electronic transitions in AlAr n clusters correlating with the Al 4s←3 p and 3d ←3p atomic transitions has been investigated with mass resolved REMPI detection. 19,24 Despite the considerable attention given to aluminum atom complexes, to our knowledge no previous report of the observation of the AlNe complex has been published.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of the AlNe complex

Yang

Dagdigian

Alexander

1998

The Journal of Chemical Physics

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Experimental and theoretical studies of the CN-Ar van der Waals complexExperimental detection and theoretical characterization of the H 2 -NH ( X ) van der Waals complexThe laser fluorescence excitation spectrum of the AlNe complex, in the vicinity of the Al atomic 3d←3p and 5s←3p atomic transitions, is reported. Transitions out of the vϭ0 vibrational levels of both lower-state spin-orbit levels, X 1 2 ⌸ 1/2 and X 2 2 ⌸ 3/2 , to vibrational levels of the C 2 ⌬, D 2 ⌸, and H 2 ⌺ ϩ AlNe electronic states were observed. From observations of the onset of excitation to the Al(3d)ϩNe dissociation continuum, dissociation energies for the various AlNe electronic states were determined. Ab initio calculations of AlNe electronic states correlating with the ground Al(3p)ϩNe atomic asymptote were also carried out. The X 1 2 ⌸ 1/2 and X 2 2 ⌸ 3/2 binding energies computed using the calculated AlNe͑X 2 ⌸, A 2 ⌺ ϩ ͒ potential energy curves were in reasonable agreement with the experimental determinations. The experimentally determined dissociation energy for the X 2 2 ⌸ 3/2 level is significantly larger than that of the ground X 1 2 ⌸ 1/2 level ͑D 0 ϭ32.3Ϯ0.3 and 14.1Ϯ0.3 cm Ϫ1 , respectively͒.

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“…This same logic has also been applied to van der Waals complexes of the group IIIA metals ͑e.g., Al,In͒, except that the ground/excited state pattern seen for the alkalis is inverted in the 2 ⌺← 2 ⌸ band systems studied for the group IIIA complexes. [13][14][15][16][17][18][19][20][21][22] The noble metals are expected to be more polarizable than the lighter metals studied to date, enhancing the van der Waals interactions. The spin-orbit interactions are also expected to be more pronounced in the noble metals than they are in the alkalis or lighter group IIA systems.…”

Section: Introductionmentioning

confidence: 99%