The structures of bare and deuterated Co{sub 19}

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The structures of bare Co{sub 19} and deuterated Co{sub 19}D{sub m} clusters are examined by the chemical probe method, and earlier assignments of bare Co{sub 19} as an fcc octahedron are reconsidered. New experimental measurements of the reactivity of Co{sub 19} with ammonia, nitrogen, and deuterium are presented, and together with earlier measurements of the reactivity with water suggest that bare Co{sub 19} has an hcp structure (D{sub 3h} symmetry). The adsorption of deuterium on Co{sub 19} is found to proceed in steps, leading to successive saturation levels at Co{sub 19}D{sub 4}, Co{sub 19}D{sub 14}, and Co{sub 19}D{sub 18}. Using ... continued below

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15 p.

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Parks, E.K. & Riley, S.J. July 1, 1997.

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Description

The structures of bare Co{sub 19} and deuterated Co{sub 19}D{sub m} clusters are examined by the chemical probe method, and earlier assignments of bare Co{sub 19} as an fcc octahedron are reconsidered. New experimental measurements of the reactivity of Co{sub 19} with ammonia, nitrogen, and deuterium are presented, and together with earlier measurements of the reactivity with water suggest that bare Co{sub 19} has an hcp structure (D{sub 3h} symmetry). The adsorption of deuterium on Co{sub 19} is found to proceed in steps, leading to successive saturation levels at Co{sub 19}D{sub 4}, Co{sub 19}D{sub 14}, and Co{sub 19}D{sub 18}. Using binding rules derived from earlier studies of larger cobalt and nickel clusters, possible D-atom binding sites on Co{sub 19}D{sub m} (both fcc and hcp) are proposed.

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15 p.

Notes

OSTI as DE97007871

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  • Other Information: PBD: [1997]

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  • Other: DE97007871
  • Report No.: ANL/CHM/PP--88396
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/505277 | External Link
  • Office of Scientific & Technical Information Report Number: 505277
  • Archival Resource Key: ark:/67531/metadc695317

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  • July 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 16, 2015, 5:21 p.m.

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Parks, E.K. & Riley, S.J. The structures of bare and deuterated Co{sub 19}, report, July 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc695317/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.