Adsorption of methane molecules on neutral titanium Met-Cars

H. Sakurai, A. W. Castleman
1999 Journal of Chemical Physics  
Titanium metallocarbohedrenes ͑Met-Cars͒ are observed to adsorb methane molecules at low temperatures. The observed formation of the methane-Ti 8 C 12 cluster complexes provides further direct evidence establishing that stable neutral titanium Met-Cars are present in copious amounts in the cluster beam. At sufficiently low temperatures, a dominant peak is observed for Ti 8 C 12 ͑CH 4 ͒ 4 along with less intense peaks of other methane-Ti 8 C 12 clusters, which suggests the geometry of titanium
more » ... metry of titanium Met-Cars may be the tetrahedral cage structure with T d symmetry. By studying the photoionization efficiency of the methane-Ti 8 C 12 complexes near ionization threshold, their ionization potentials are found to be lower than that of Ti 8 C 12 .
doi:10.1063/1.479446 fatcat:okgmhifn7re7znr7ytweqkxfbu