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- W2043957805 abstract "Energetics of eight enol isomers of a malonaldehyde (MA) at the ground state in CCl4 solvent environment have been investigated using a hybrid quantum mechanical (QM)/molecular mechanics (MM) method. It is found that relative energies of the isomers slightly change due to interactions between MA and surrounding atoms. In an isolated environment all eight isomers have stable planar structure. On the other hand, most of the isomers have nonplanar structure in CCl4 whose interactions with the solute molecules are, however, weak. Mainly, structural changes are found in the HOCC dihedral angle ϕHOCC, i.e., a hydrogen atom that is connected directly with an oxygen atom, is located at a nonplanar position, and other atoms remain almost planar. Vertical excitation energies of low-lying excited states at the resultant optimized structure of each isomer are evaluated. The vertical excitation energies in CCl4 are almost the same as those in the isolated environment, but some changes were found in the triplet excitation states. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 2004" @default.
- W2043957805 created "2016-06-24" @default.
- W2043957805 creator A5048994262 @default.
- W2043957805 date "2003-01-01" @default.
- W2043957805 modified "2023-10-18" @default.
- W2043957805 title "Hybrid QM/MM studies on energetics of malonaldehyde in condensed phase" @default.
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- W2043957805 doi "https://doi.org/10.1002/qua.10790" @default.
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