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Citation: LIU Hai-Tao, MO Wan-Ling, XIONG Hui, LI Guang-Xing. Steric and Electronic Influences of N-donor Ligands for Catalytic Oxidative Carbonylation of Methanol[J]. Chinese Journal of Applied Chemistry, ;2005, 22(9): 997-1001. shu

Steric and Electronic Influences of N-donor Ligands for Catalytic Oxidative Carbonylation of Methanol

1.
Department of Chemistry, Huazhong University of Science & Technology, Wuhan 430074

Corresponding author: LI Guang-Xing,
Received Date: 21 October 2004
Available Online: 10 February 2005

The promotion effects of N-donor ligands for catalytic oxidative carbonylation of methanol were studied.It was found that the base strength of ligands,the size of conjugated systems,the rigidity of skeletons and the hydrogen bonds between the ligands had remarkable influences on the calalytic performance for the oxidative carbonylation.The ligands with larger conjugated systems and rigid skeletons give better catalytic activities,and intermolecular hydrogen bonds between ligands greatly decrease promoting activities.For monodentate ligands without intermolecular hydrogen bonds,those with pK_a 7 exhibit the best promoting activity.The mechanism of steric and electronic effects for the oxidative carbonylation of methanol in homogeneous system was discussed in detail.
- N-donor ligand,
- steric effect,
- electronic effect,
- oxidative carbonylation,
- methanol
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