Rapid Phosphodiester Hydrolysis Catalyzed by Lanthanum（Ⅲ）  

作　　者：寇兴明 胡艳 黄忠 孟祥光 曾宪诚 

机构地区：[1]Sichuan Key Laboratory of Green Chemistry and Technology, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China [2]China Academy of Engineering Physics, Mianyang, Sichuan 621900, China

出　　处：《Chinese Journal of Chemistry》2005年第10期1303-1308,共6页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Nos. 20173038, 20107004）.

摘　　要：The catalytic hydrolysis of bis（4-nitrophenyl）phosphate （BNPP） by lanthanum（Ⅲ） ion in the presence of amino-alcoholic ligands： diethanolamine （DEA） and triethanolamine （TEA）, was investigated kinetically at 30 ℃. The results indicated that the dinuclear dihydroxo complexes formed by lanthanum（Ⅲ） ion with aminoalcoholic ligands might be the catalytically active species which catalyze the hydrolysis of BNPP to different extents and the catalytic mechanism was believed to involve the synergism of double Lewis acid activation of the substrate and an intramolecular nucleophilic attack of a bridging oxo ligand.The catalytic hydrolysis of bis（4-nitrophenyl）phosphate （BNPP） by lanthanum（Ⅲ） ion in the presence of amino-alcoholic ligands： diethanolamine （DEA） and triethanolamine （TEA）, was investigated kinetically at 30 ℃. The results indicated that the dinuclear dihydroxo complexes formed by lanthanum（Ⅲ） ion with aminoalcoholic ligands might be the catalytically active species which catalyze the hydrolysis of BNPP to different extents and the catalytic mechanism was believed to involve the synergism of double Lewis acid activation of the substrate and an intramolecular nucleophilic attack of a bridging oxo ligand.

关 键 词：PHOSPHODIESTER HYDROLYSIS lanthanum（Ⅲ） ion amino-alcohol artificial nuclease kinetics 

分 类 号：O614.331[理学—无机化学] O643.3[理学—化学]