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IJC-A Vol.49A(04) [April 2010] >


Title: DFT study on the reaction of La (2D) with CH3CHO
Authors: Dai, Guoliang
Chen, Hao
Yan, Hua
Wang, Chuanfeng
Zhong, Aiguo
Keywords: Theoretical chemistry
Density functional calculations
Potential energy surfaces
Reaction mechanisms
Lanthanum
Acetaldehyde
Issue Date: Apr-2010
Publisher: CSIR
Abstract: The reaction mechanism of the ground state (2D) La atom with CH3CHO has been studied in detail by density functional theory. All the stationary points has been determined at the UB3LYP/ECP/ 6-311+G** level of theory. Single point UCCSD(T)/ECP/6-311+G** calculations have been used to get accurate values of energies. The titled reaction starts with the formation of a η2-CH3CHO-metal complex followed by C−C, C−O, aldehyde C−H and methyl C−H activation. These reactions can lead to four products, i. e., LaCO+CH4, HLaCH3+CO, LaO+C2H4 and LaCH2CO+H2. As the energies of the intermediates, transition states and products involved in the reaction lie below those of the reactants, La(2D) + CH3CHO, (except TS38, only 0.18 kcal/mol relative to the reactants), the reaction between La(2D) and CH3CHO is expected to occur spontaneously over the doublet potential energy surface. The present results may be helpful in understanding the mechanism of the titled reaction and further experimental investigation of the reaction.
Page(s): 431-436
Source:IJC-A Vol.49A(04) [April 2010]

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