Citation: Guo Qiang SHANGGUAN, Jun ZHU, Ning WANG, Jia Zuan NI. Phosphate Diester Hydrolysis by Dinuclear Tb(III) Complexes with BDBPH in Second-order Dependence[J]. Chinese Chemical Letters, ;2006, 17(1): 89-92. shu

Phosphate Diester Hydrolysis by Dinuclear Tb(III) Complexes with BDBPH in Second-order Dependence

1.
Department of Chemistry, Jining Medical College, Jining 272013;
2.
Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
3.
Graduate School of Chinese Academy of Sciences, Beijing 100039

Received Date: 6 April 2005

The kinetic study on the hydrolysis reaction of bis(4-nitrophenyl) phosphate (BNPP) catalyzed by Tb-BDBPH system(2:1) was carried out in 50% ethanol solution (pH 7.0-10.0) at 35℃ with I=0.10NaNO₃. The second-order rate constant k_BNPP, 2.3×10^-3 (mol^-1L S^-1), was determined. The dinuclear monohydroxo species, L-2Tb-OH, is kinetically mainly active species.The hydrolysis rate of BNPP by the complex is increased almost 2.6 million-fold compared with the background hydroxide rate at the same condition.
- Tb(Ⅲ)-BDBPH,
- phosphate diester,
- hydrolysis,
- rate constant
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