Catalytic mechanism and activity of a nitrogen heterocycle lanthanum(III) complex in the hydrolysis of bis(4-nitrophenyl) phosphate ester. (25th September 2012)

• Record Type: Journal Article
• Authors: Cai, Shulan; Feng, Famei; Zou, Like; Huang, Chun; Xie, Jiaqing
• Is Part Of: Progress in reaction kinetics and mechanism. Volume 37:Number 4(2012)
• Page Start: 398
• Page End: 410
• Publication Date: 2012-09-25
• Subjects: Chemical kinetics -- Periodicals; 541.39405
• DOI: 10.3184/146867812X13440035186093
• Languages: English
• ISSNs: 1468-6783

Abstract

The system made up of a nitrogen heterocycle ligand and lanthanum(III) ion was used in the catalytic hydrolysis of bis(4-nitrophenyl) phosphate ester (BNPP). This catalytic system showed higher catalytic activity in this hydrolysis and better reproducibility and stability than other similar lanthanum(III) ion systems. The rate of the catalytic hydrolysis was about 108-fold faster than that of its spontaneous hydrolysis under the same conditions. Compared with previous Cu(II) or Ni(II) complexes containing the same ligand in water, the activity of the macrocyclic La(III) complexe is increased ca 104-fold. The experimental evidence showed that the mon-hydroxy complex made of the nitrogen heterocycle ligand and lanthanum(III) ion is the active species as catalyst in the catalytic hydrolysis of BNPP.