Article pubs.acs.org/Organometallics
A Combined Theoretical and Experimental Study on the Wavelength-Dependent Photophysics of (η6-benzene)Mo(CO)3 Michael W. George,† Conor Long,*,‡ Mary T. Pryce,‡ Xue-Zhong Sun,† and Khuong Q. Vuong† †
School of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
‡
ABSTRACT: The photochemistry of (η6-benzene)Mo(CO)3 was investigated by picosecond time-resolved infrared spectroscopy in n-heptane solution at room temperature. Two excitation wavelengths, 400 and 266 nm, were used. The photophysical processes of this system depend on the excitation wavelength. Excitation with 400 nm light populates predominantly a metal-to-arene charge-transfer excited state which relaxes to the ground state within 150 ps of excitation. In addition, (η6-benzene)Mo(CO)2(n-heptane) is produced in low yield within the rise time of these experiments (500 fs). Excitation with 266 nm radiation results in a depletion of (η6-benzene)Mo(CO)3 absorptions but no excited state or product νCO absorptions are evident at short time scales (
