Catalytic hydrolysis of bis(p-nitrophenyl) phosphate by lipophilic diaquo(tetraamine) cobalt(III) in micellar solution

Authors
Xie, JQ Cheng, SQ Du, J Zeng, XC
Citation
Jq. Xie et al., Catalytic hydrolysis of bis(p-nitrophenyl) phosphate by lipophilic diaquo(tetraamine) cobalt(III) in micellar solution, J DISP SCI, 22(4), 2001, pp. 337-341
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
ISSN journal
01932691 → ACNP
Volume
22
Issue
4
Year of publication
2001
Pages
337 - 341
Database
ISI
SICI code
0193-2691(2001)22:4<337:CHOBPB>2.0.ZU;2-C
Abstract
The catalytic hydrolysis of bis(p-nitrophenyl) phosphate by lipophilic diaq uo-(tetraamine)Co(III) complex in Brij35 micellar solution was investigated at 25 degreesC and at pH ranging from 4.1 to 9.0. The results indicated th at the Co(III) complex in micellar solution exhibited a great rate enhancem ent effect on the hydrolysis of bis(p-nitrophenyl) phosphate compared with the Co(III) complex in aqueous solution. This may be explained by the decre ase in pK for the dissociation of water molecule of the Co(III) complexes i n micellar solution. A kinetic scheme is suggested for elucidating the mech anism.