Abstract
AbstractThe absorption spectrum of ketene (CH2CO) in the 145‐ to 220‐nm region is calculated completely from first principles and compared to a recent high‐resolution synchrotron radiation experiment J Chem Phys 2002, 117, 4306. The simulations are based on a vibronic model, which is extracted from routinely applicable coupled cluster calculations for electronically excited states. Nonadiabatic effects are assessed by a comparison of the vibronic model simulations with Franck–Condon calculations and are found to be important to understand various aspects of the absorption spectrum of ketene. © 2003 Wiley Periodicals, Inc. Int J Quantum Chem, 2003
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