a Quantum Chemical Study of the Structure and Chemistry of HZnCH_3, a Transition Metal Compound with 4s^2 Recoupled Pair Bonding

Details a Quantum Chemical Study of the Structure and Chemistry of HZnCH_3, a Transition Metal Compound with 4s^2 Recoupled Pair Bonding a Quantum Chemical Study of the Structure and Chemistry of HZnCH_3, a Transition Metal Compound with 4s^2 Recoupled Pair Bonding

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mss..conferi12w&link_type=abstract

"International Symposium On Molecular Spectroscopy, 66th Meeting, Held 20-24 June, 2011 at Ohio State University. http://molspec

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A structure was recently reported by Flory et al. for methyl zinc hydride, HZnCH_3, a molecule that may be formed via the direct insertion of Zn into one of the CH bonds of methane. The experiments were not able to demonstrate the formation pathway conclusively. The structures, bond energies, and other properties of HZnCH_3, ZnH, and ZnCH_3 were determined with high level coupled-cluster theory and multireference configuration interaction calculations in order to better understand the nature of the chemistry of HZnCH_3. The Zn--H and Zn--C bonds in HZnCH_3(X^1A_1) were found to be formed through recoupling the 4s^2 pair of Zn(^1S) in a manner that is very similar to the bonding in HBeCH_3 and other compounds where the 2s^2 pair of Be is recoupled. Various formation pathways were characterized, such as the analogous family of exchange reactions H + CH_4 → CH_4 + H, Zn + CH_4 → ZnCH_3 + H, and Be + CH_4 → BeCH_3 + H. Direct insertion may involve an intersystem crossing from the Zn(^3P) + CH_4 triplet surface to the singlet surface, which has been explored.
M. A. Flory, A. J. Apponi, L. N. Zack, and L. M. Ziurys, J. Am. Chem. Soc. 132, 17186 (2010).

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