title: Metallomicellar catalysis: hydrolysis of phosphate monoester and phosphodiester by Cu(II), Zn(II) complexes of pyridyl ligands in CTAB micellar solution.
abstract: The catalytic hydrolysis of bis(p-nitrophenyl) phosphate (BNPP) and p-nitrophenyl phosphate (NPP) by metallomicelles composed of Cu(II) or Zn(II) complexes of bispyridine-containing alkanol ligands in CTAB micellar solution was investigated at 30 degrees C. The experimental results indicate that the complexes with a 1:1 ratio of ligands to metal ions for ligands 1 (1,7-bis(6-hydroxymethyl-2-pyridyl)-2,6-dioxaheptane) and 3 (1,4-bis[(6-hydroxymethyl-2-pyridyl)-2-oxapropyl]benzene) and a 1:2 ratio of ligands to metal ions for ligand 2 (1,14-bis(6-hydroxymethyl-2-pyridyl)-2,13-dioxatetradecane) in CATB micellar solution are the active species for the catalytic hydrolysis of BNPP and NPP, respectively. The ternary complex kinetic model for metallomicellar catalysis was employed to obtain the relative kinetic and thermodynamic parameters, which demonstrated the catalytic mechanism for the hydrolysis of BNPP and NPP by metallomicelles.
authors.affiliation: Department of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
authors.forename: Fubin
authors.initials: F
authors.lastname: Jiang
authors.forename: Liya
authors.initials: L
authors.lastname: Huang
authors.forename: Xiangguang
authors.initials: X
authors.lastname: Meng
authors.forename: Juan
authors.initials: J
authors.lastname: Du
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Yu
authors.forename: Yufen
authors.initials: Y
authors.lastname: Zhao
authors.forename: Xiancheng
authors.initials: X
authors.lastname: Zeng
mesh_terms: D000473:Alkanes / Q000737:chemistry*; D001555:Benzene Derivatives / Q000737:chemistry*; D002384:Catalysis; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D006536:Heptanes / Q000737:chemistry*; D008024:Ligands; D008823:Micelles; D009596:Nitrophenols / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: C522832:1,14-bis(6-hydroxymethyl-2-pyridyl)-2,13-dioxatetradecane; C522831:1,4-bis((6-hydroxymethyl-2-pyridyl)-2-oxapropyl)benzene; C522830:1,7-bis(6-hydroxymethyl-2-pyridyl)-2,6-dioxaheptane; D000473:Alkanes; D001555:Benzene Derivatives; D002593:Cetrimonium Compounds; D006536:Heptanes; D008024:Ligands; D008823:Micelles; D009596:Nitrophenols; D009943:Organophosphorus Compounds; D011725:Pyridines; C008644:nitrophenylphosphate; C002887:bis(4-nitrophenyl)phosphate; D003300:Copper; D015032:Zinc; D000077286:Cetrimonium