An Infrared Study of Gas-Phase Metal Nitrosyl Ion-Molecule Complexes.

We present a combined experimental and quantum chemical study of gas-phase group 9 metal nitrosyl complexes, M(NO) (M = Co, Rh, Ir). Experimental infrared photodissociation spectra of mass-selected ion-molecule complexes are presented in the region 1600 cm to 2000 cm which includes the NO stretch. These are interpreted by comparison with the simulated spectra of energetically low-lying structures calculated using density functional theory.