Kinetic and Mechanistic Investigations of the Catalysed Hydrolysis of Bis( p -Nitrophenyl) Phosphate by a Macrocyclic Neodymium(III) Complex

The macrocyclic ligand 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane (L) was synthesised and characterised. The kinetics of hydrolysis of bis(p-nitrophenyl) phosphate (BNPP) in a catalytic system comprising the macrocyclic ligand and neodymium(III) was investigated. The analysis of spe...

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Bibliographic Details
Published in:Progress in reaction kinetics and mechanism 2013-01, Vol.38 (3), p.240-248
Main Authors: Cai, Shulan, Hu, Wei, Li, Jianzhang, Xiea, Bin, He, Leijin, Zhang, Xiaolan
Format: Article
Language:English
Subjects:
Absorption spectra
Catalysis
Catalysts
Hydrolysis
Ligands
Macrocyclic compounds
Mathematical analysis
Phosphates
Reaction kinetics
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Summary:The macrocyclic ligand 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane (L) was synthesised and characterised. The kinetics of hydrolysis of bis(p-nitrophenyl) phosphate (BNPP) in a catalytic system comprising the macrocyclic ligand and neodymium(III) was investigated. The analysis of specific absorption spectra of the hydrolytic reaction system indicated that key intermediates containing BNPP and the Nd(III) complex are formed in the reaction. The mechanism proposed for the catalytic hydrolysis proposed is based on the analytical results of the specific absorption spectrum, and the corresponding kinetic constants are calculated. The results showed that the Nd(III) complex as a mimic hydrolase exhibits good catalytic activity, i.e. similar to that of the natural enzyme.
ISSN:1468-6783
1471-406X
DOI:10.3184/146867813X13708884345997