Spectroscopy, Structure and Proton Dynamics of 2-Hydroxypyridine and Its Clusters with Water and Ammonia
Abstract
The two tautomeric forms of 2 hydroxypyridine (2-HP) have been studied in a supersonic jet expansion. Time-of-flight mass spectroscopy (TOFMS) and emission spectroscopy of the lactim and lactam tautomers have been studied and are reported here. The lactim spectrum is similar to an earlier TOFMS spectrum and has its origin at 36,136/cm. Evidence of mixing of the npi and pi electronic states is seen in the lactim spectrum. The mixing is removed in the disolvate water cluster but not in monosolvate clusters of ammonia or water. The lactam is shown to be nonplanar giving rise to two origins in the excitation spectrum at 29,832/cm and 29,935/cm. The ammonia and water lactim cluster spectra show significant shifts to the red while the cluster spectra of the lactam show large shifts to the blue. Experimental evidence for strong hydrogen bonding in these clusters is discussed. Intramolecular and intermolecular proton transfer in 2-HP and its clusters is discussed in the context of these data. Pyridines.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 12, 1988
- Accession Number
- ADA197456
Entities
People
- D. F. Kelley
- Elliot R. Bernstein
- M. R. Nimlos
Organizations
- Colorado State University