Vibrational potential energy functions and conformations of cyclopentanone and cyclobutanone in their electronic excited states

The jet-cooled fluorescence excitation spectra of cyclopentanone, cyclobutanone and their isotopomers have been recorded in the 305-335 nm region, respectively. The electronic band origin for the two undeuterated species was determined to be 30276 and 30292 cm;In the spectrum of cyclopentanone a progression observed for ;For the ring-puckering vibration in the S...