Laser vaporization generation of PdCH3, 105PdCH3, and Pd13CH3 for electron spin resonance neon matrix study at 4 K
Knight, L. B.; Herlong, J. O.; Cobranchi, S. T.; Kirk, T. J. Laser vaporization generation of PdCH3, 105PdCH3, and Pd13CH3 for electron spin resonance neon matrix study at 4 K. J. Chem. Phys. 1990, 92, 6463-6463.
The Pd1 2CH3, Pd1 3CH3, and 1 0 5Pd1 2CH3 radicals have been generated by reactive laser vaporization and isolated in neon matrices at 4 K for electron spin resonance(ESR) investigation. Apparently no previous monomethyl metal radical has been characterized by ESR despite the importance of such species as reactive intermediates. These results allow an experimental description of the electronic structure in the valence region to be obtained. A direct electronic structure comparison between PdH and PdCH3 is also presented. A significant amount of s/d hybridization on Pd is observed which agrees with earlier calculations on the bonding in Pd(CH3)2. The magnetic parameters (MHz) for PdCH3 in neon matrices are: g -Š¥=2.273(1); for 1 0 5Pd, A -Š¥=-ˆ’946(2), A -ˆ¥=-ˆ’987(20); for H, -€–A-€–=13(1); and for 1 3C, -€–A-€–=10.2(4).
Journal of Chemical Physics