Matrix isolated Co atoms: Excitation, emission and the photochemical Co + H2→CoH2 reaction ag

Rubinovitz, Ronald; Cellucci, Thomas A.; Nixon, Eugene R.

doi:10.1016/0584-8539(87)80147-2

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…[114] The latest matrix IR results [115] also indicate a linear molecule in argon, in contrast to earlier work in xenon, [116] which gave a bond angle of ªaround 1178º. In the cases of CoH 2 [117] and ZnH 2 , [106,118] IR data show them to be close to linear or linear in a matrix, although for CoH 2 the ESR spectrum was interpreted [119] in terms of a strongly bent molecule. However, there is one very interesting result.…”

Section: Hydridesmentioning

confidence: 46%

A Critical Appraisal of the Experimental Data on the Molecular Structure and Spectra of Halides, Oxides, and Hydrides of the s-, d-, and f-Block Elements

Beattie

1999

Angew. Chem. Int. Ed.

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Evidence for unusual shapes of simple MX(n) molecules that are not stable under normal conditions is critically appraised in this review, which assesses current knowledge of the spectra and structures of many simple binary halides, oxides, and hydrides. It emphasizes the need for more high-resolution gas-phase spectroscopic data, summarizes the current state of knowledge in many fields, and suggests key experiments that should be carried out to resolve conflicting results obtained in earlier studies.

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Section: Hydridesmentioning

confidence: 46%

A Critical Appraisal of the Experimental Data on the Molecular Structure and Spectra of Halides, Oxides, and Hydrides of the s-, d-, and f-Block Elements

Beattie

1999

Angew. Chem. Int. Ed.

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“…[114] Die neuesten Ergebnisse der IR-Matrix-Spektroskopie [115] deuten darauf hin, daû das Molekül auch in Argon linear ist, was im Gegensatz zu einer früheren Arbeit steht, die in Xenon [116] einen Bindungswinkel von ¹around 1178ª ergab. Im Fall von CoH 2 [117] und ZnH 2 [106,118] zeigen die IR-spektroskopischen Daten, daû die Moleküle in Matrix nahezu oder völlig linear sind, obwohl die Interpretation des EPR-Spektrums für CoH 2 [119] ein stark gebogenes Molekül ergab. Es gibt allerdings ein sehr interessantes Ergebnis.…”

Section: Hydrideunclassified

Eine kritische Bewertung der experimentellen Daten über Molekülstruktur und Spektren der Halogenide, Oxide und Hydride der s-, d- und f-Block-Elemente

Beattie¹

1999

Angewandte Chemie

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Guided ion-beam studies of the kinetic-energy-dependent reactions of Con+(n=2–16) with D2: Cobalt cluster-deuteride bond energies

Liu

Armentrout

2005

The Journal of Chemical Physics

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The kinetic-energy-dependent cross sections for the reactions of Co(n)+ (n = 2-16) with D2 are measured as a function of kinetic energy over a range of 0-8 eV in a guided ion-beam tandem mass spectrometer. The observed products are Co(n) D+ for all clusters and Co(n)D2+ for n = 4,5,9-16. Reactions for the formation of Co(n)D+ (n = 2-16) and Co9D2+ are observed to exhibit thresholds, whereas cross sections for the formation of Co(n)D2+ (n = 4,5,10-16) exhibit exothermic reaction behavior. The Co(n)+-D bond energies as a function of cluster size are derived from the threshold analysis of the kinetic-energy dependence of the endothermic reactions and are compared to previously determined metal-metal bond energies, D0(Co(n)+-Co). The bond energies of Co(n)+-D generally increase as the cluster size increases, and roughly parallel those for Co(n)+-Co for clusters n > or = 4. These trends are explained in terms of electronic and geometric structures for the Co(n)+ clusters. The bond energies of Co(n)+-D for larger clusters (n > or = 10) are found to be very close to the value for chemisorption of atomic hydrogen on bulk-phase cobalt. The rate constants for D2 chemisorption on the cationic clusters are compared with the results from previous work on cationic and neutral cobalt clusters.

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Matrix isolated Co atoms: Excitation, emission and the photochemical Co + H2→CoH2 reaction ag

Cited by 4 publications

References 12 publications

A Critical Appraisal of the Experimental Data on the Molecular Structure and Spectra of Halides, Oxides, and Hydrides of the s-, d-, and f-Block Elements

A Critical Appraisal of the Experimental Data on the Molecular Structure and Spectra of Halides, Oxides, and Hydrides of the s-, d-, and f-Block Elements

Eine kritische Bewertung der experimentellen Daten über Molekülstruktur und Spektren der Halogenide, Oxide und Hydride der s-, d- und f-Block-Elemente

Guided ion-beam studies of the kinetic-energy-dependent reactions of Con+(n=2–16) with D2: Cobalt cluster-deuteride bond energies

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