The structure of Ni39

Journal of Chemical Physics

Volumn 109, Issue 23, 1998, Pages 10207-10216

  Parks, E K ^a   Kerns, K P ^a   Riley, S J ^a  

^a ARGONNE NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000182705     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.477715     Document Type: Article

References (59)

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39. For references to work prior to 1993 see Ref. 9.
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43. m.
44. + distributions are assigned either to isomer "a" or "b." The fraction of isomer "b" is simply the sum of the intensities of the "b" isomer peaks divided by the sum of the intensities of all the peaks.
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46. At higher temperatures the desorption lifetime becomes shorter than the time the clusters spend in the FTR and the reaction enters an equilibrium regime. Product distributions become relatively narrow, reflecting the equilibrium relationship between species.
47. + is actually trimodal, suggesting that three isomers are present in the FTR (trimodal distributions are not seen for RD addition). In these cases, m̄ for the "b" structure(s) includes peaks for the lowest two components of the distribution.
48. It is possible that the two structures observed with RU addition of nitrogen result from continued cluster growth downstream of the RU port. However, previous experiments (unpublished) on iron clusters at room temperature and various helium pressures demonstrated that cluster growth and cluster cooling are complete by the time the clusters reach the RU port. At lower temperatures in the present experiments, the helium pressure was adjusted to maintain the same diffusional loss of clusters to the wall of the FTR in an attempt to insure that cluster growth always terminates upstream of the RU port. Thus while cluster growth beyond the RU port is possible, we believe it is unlikely.
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54. 26 isomer.
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56. Private communication of unpublished results.
57. The two most stable structures were found by relaxing geometries corresponding to the four Wetzel and DePristo isomers.
58. 2 adsorption energy is due to the change in metal coordination of the surface atoms and not the overall change in cluster size.
59. 2 binding to the five eight-coordinate sites results.