MASS RESOLVED PHOTOIONIZATION FRAGMENTATION STUDIES OF CR(CO)(6) AT PHOTON ENERGIES OF SIMILAR-TO-8-40 EV/

We have carried out a comprehensive study on the photoionization/fragm entation of Cr(CO)(6) by using the time-of-flight mass spectrometry (T OFMS) technique and a synchrotron radiation source in the photon energ y range of similar to 8-40 eV. The appearance potentials (AP) of all t he observed fragment ions were accurately determined, and those of som e fragments, e.g., the doubly charged ions and the carbide fragments, were determined for the first time,The corresponding thermodynamic pro perties of these fragment ions have been derived. (C) 1997 American In stitute of Physics.