Figure 2. Transient spectroscopy and kinetics of uncoupled W(CO)₆.

(a) Transient absorption spectra of uncoupled W(CO)₆ in hexane measured 20 (red) and 100 ps (blue) after infrared excitation. (b) Kinetic traces measured at the peak of the ground-state bleach (1,983 cm⁻¹) and first (1,968 cm⁻¹) and second (1,953 cm⁻¹) hot-band transitions. Solid grey lines are results of a fit to the relaxation dynamics. The inset schematically shows the transitions excited and probed in the experiment.