Spectroscopy and electronic structure of jet-cooled NiPd and PdPt

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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.
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Format Extent 1,090,470 bytes
Identifier ir-main,16975
ARK ark:/87278/s6tt58mh
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-06-13
ID 707526
Reference URL https://collections.lib.utah.edu/ark:/87278/s6tt58mh
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