Structures of platinum oxide clusters in the gas phase.
The structures of small gas-phase Pt(n)O(2m)(+) (n = 1-6, m = 1, 2) cluster cations have been investigated in a combined infrared multiple photon dissociation (IRMPD) spectroscopy and density functional theory (DFT) study. On the basis of the infrared spectra obtained, it is concluded that in most clusters oxygen is bound dissociatively, preferring 2-fold bridge binding motifs, sometimes combined with singly coordinated terminal binding. Comparison of the oxide cluster structures with those of bare cationic platinum clusters reported previously reveals major structural changes induced in the platinum core upon oxygen binding. For some cluster sizes the presence of the Ar messenger atom(s) is found to induce a significant change in the observed cluster structure.
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
Christian
C
Kerpal
Dan J
DJ
Harding
Alexander C
AC
Hermes
Gerard
G
Meijer
Stuart R
SR
Mackenzie
André
A
Fielicke
D005740:Gases / Q000737:chemistry; D015394:Molecular Structure; D010087:Oxides / Q000737:chemistry*; D017785:Photons; D010984:Platinum / Q000737:chemistry*; D011789:Quantum Theory; D013055:Spectrophotometry, Infrared
D005740:Gases; D010087:Oxides; C514637:platinum oxide; D010984:Platinum