Pulsed field ionization-zero kinetic energy photoelectron spectrum of the jet-cooled aluminum-ammonia complex, AlNH3, has been observed for the first time. The spectrum shows vibronic transitions from two spin-orbit levels of the neutral ground state, which allows the measurement of the following spectroscopic constants: ionization potential (39 746 cm-1), spin-orbit splitting (58 cm-1), intermolecular stretching vibrational frequencies (ω3+=339 cm-1, ω3+x3+=3.1 cm-1, and ν3=227 cm-1), and intermolecular bending frequency (ν6+=557 cm-1). The observation of the spin-orbit splitting confirms that the ground state of the neutral complex is the 2E state.
|Number of pages||5|
|Journal||Chemical Physics Letters|
|State||Published - Nov 12 1999|
Bibliographical noteFunding Information:
The authors wish to thank Benoit Simard and Zygmunt Jakubek for providing us with the results of their R2PI spectra prior to publication. D.S.Y. thanks the Donors of the Petroleum Research Fund, administrated by the American Chemical Society, for the partially financial support of this work, and Computational Center of the University of Kentucky for providing the computing facility. J.M. thanks the National Institute for Advanced Interdisciplinary Research for providing the travel grant.
ASJC Scopus subject areas
- Physics and Astronomy (all)
- Physical and Theoretical Chemistry