Infrared photodissociation spectroscopy of V+(CO2)n and V+(CO2)nAr complexes

摘要: V+(CO2)n and V+(CO2)nAr complexes are generated by laser vaporization in a pulsed supersonic expansion. The mass-selected within reflectron time-of-flight mass spectrometer studied infrared resonance-enhanced (IR-REPD) photodissociation spectroscopy. Photofragmentation proceeds exclusively through loss of intact CO2 molecules from or elimination Ar mixed complexes. Vibrational resonances identified assigned the region asymmetric stretch free at 2349 cm−1. A linear geometry is confirmed for V+(CO2). Small have that blueshifted CO2, consistent with structures which all ligands bound directly to metal ion. Fragmentation larger clusters terminates size n=4, new vibrational band 2350 cm−1 external observed V+(CO2)5 cluster sizes. These combined observations indicate coordination n...