Multiphoton Ionization Mass Spectrometric Studies of Transition Metal Carbonyl Complexes | CU Experts

The multiphoton photochemistries of a variety of gas phase transition metal carbonyl; complexes are investigated by MPI time‐of‐flight mass spectrometry, and results; indicate that molecular fragment ionization can compete with atomization in these; systems. Molecular ions detected include a variety of homonuclear and heteronuclear; bare metal clusters, metal‐sulfur clusters and metal monocarbonyls. Thus, multiphoton; excitation of stable metal carbonyl compounds provides a versatile synthetic route to; highly unsaturated neutral and ionic gas phase clusters which offers unique product; cluster specificity and does not require the use of high temperature sources. The; detection under collision‐free conditions of bare metal dimers and trimers following; MPI of several dinuclear and trinuclear metal cluster carbonyl compounds, respectively,; indicates that dissociative CO loss can compete with metal–metal bond cleavage as a; primary excited state reaction upon UV photolysis of these systems.

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