Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Chemistry |
Creator |
Morse, Michael David |
Other Author |
Taylor, Scott; Spain, Eileen M. |
Title |
Spectroscopy and electronic structure of jet-cooled NiPd and PdPt |
Date |
1990 |
Description |
Resonant two-photon ionization spectroscopy of jet-cooled NiPd and PdPt has revealed a dense vibronic spectrum for NiPd and a much more sparse spectrum for PdPt. Four vibrational progressions have been identified for NiPd, and three have been located for PdPt. High resolution investigations of NiPd have established a ground state bond length of r"o = 2.242 ? 0.005 ? with ?"= 2. The observed spectra have been used to bracket the ionization potentials, giving IP(NiPd) = 7.18 ? 0.76 eV and IP(PdPt) = 8.27 ? 0.38 eV. In contrast to previous work on Ni2 , NiPt, and Pt2 , no abrupt onset of rapid predissociation is observed for either NiPd or PdPt. A discussion of this result in terms of the expected potential energy curves for the palladium-containing diatomics is presented, which when combined with the frequencies of the highest energy vibronic bands observed yields estimates of D0(NiPd)~1.46 eV and D0(PdPt)~1.98 eV. The lack of observable vibronic transitions in Pd? above 11 375 cm-1 places D0(Pd?) below 1.41 eV, in agreement with Knudsen effusion mass spectrometry. Finally a comparison of the platinum group dimers and the coinage metal dimers is given, demonstrating the increasing importance of (/-orbital contributions to the bonding in the platinum group dimers as one moves down the periodic table. The anomalous behavior of the palladium-containing diatomics is also discussed in terms of the highly stable 4d10 5s?, ?S0 ground state of atomic palladium. |
Type |
Text |
Publisher |
American Institute of Physics (AIP) |
Volume |
92 |
Issue |
5 |
First Page |
2710 |
Last Page |
2720 |
DOI |
10.1063/1.457917 |
Language |
eng |
Bibliographic Citation |
Taylor, S., Spain, E. M., & Morse, M. D. (1990). Spectroscopy and electronic structure of jet-cooled NiPd and PdPt. Journal of Chemical Physics, 92(5), 2710-20. |
Rights Management |
©American Institute of Physics. The following article appeared in Taylor, S., Spain, E. M., & Morse, M. D. (1990). Spectroscopy and electronic structure of jet-cooled NiPd and PdPt. Journal of Chemical Physics, 92(5), 2710-20. and may be found at http://dx.doi.org/10.1063/1.457917. |
Format Medium |
application/pdf |
Format Extent |
1,090,470 bytes |
Identifier |
ir-main,16975 |
ARK |
ark:/87278/s6tt58mh |
Setname |
ir_uspace |
ID |
707526 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6tt58mh |