Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations

Hammer T, Manthe U (2011)
The Journal of Chemical Physics 134(22).

Journal Article | Published | English

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Abstract
Full-dimensional (multilayer) multi-configurational time-dependent Hartree calculations studying the intramolecular proton transfer in malonaldehyde based on a recent potential energy surface (PES) [Wang et al., J. Chem. Phys. 128, 224314 (2008)] are presented. The most accurate calculations yield a ground state tunneling splitting of 23.8 cm(-1) and a zero point energy of 14 678 cm-1. Extensive convergence tests indicate an error margin of the quantum dynamics calculations for the tunneling splitting of about 0.2 cm(-1). These results are to be compared with the experimental value of the tunneling splitting of 21.58 cm(-1) and results of Monte Carlo calculations of Wang et al. on the same PES which yielded a zero point energy of 14 677.9 cm(-1) with statistical errors of 2-3 cm(-1) and a tunneling splitting of 21.6 cm(-1). The present data includes contributions resulting from the vibrational angular momenta to the tunneling splitting and the zero point energy of 0.2 cm(-1) and 2.4 cm(-1), respectively, which have been computed using a perturbative approach. (C) 2011 American Institute of Physics. [doi:10.1063/1.3598110]
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Hammer T, Manthe U. Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations. The Journal of Chemical Physics. 2011;134(22).
Hammer, T., & Manthe, U. (2011). Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations. The Journal of Chemical Physics, 134(22).
Hammer, T., and Manthe, U. (2011). Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations. The Journal of Chemical Physics 134.
Hammer, T., & Manthe, U., 2011. Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations. The Journal of Chemical Physics, 134(22).
T. Hammer and U. Manthe, “Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations”, The Journal of Chemical Physics, vol. 134, 2011.
Hammer, T., Manthe, U.: Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations. The Journal of Chemical Physics. 134, (2011).
Hammer, Thorsten, and Manthe, Uwe. “Intramolecular proton transfer in malonaldehyde: Accurate multilayer multi-configurational time-dependent Hartree calculations”. The Journal of Chemical Physics 134.22 (2011).
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