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. Author manuscript; available in PMC: 2016 Dec 23.
Published in final edited form as: J Am Chem Soc. 2015 Dec 11;137(50):15865–15874. doi: 10.1021/jacs.5b10177

Figure 4.

Figure 4

Transient absorption difference spectra of 2 in acetone at −94 °C measured at the indicated delay times after 436 nm femto-second laser excitation (2 mJ/pulse and fwhm = 130 fs). Overlaid in green is a simulated spectrum. The probe light is interrupted by the pump laser in the wavelength region around 540 nm.