STUDIES ON THE FORMATION OF CU(II) AND NI(II) COMPLEXES OF 1,2-DIHYDROXY-9,10-ANTHRAQUINONE AND LACK OF STIMULATED SUPEROXIDE FORMATION BY THE COMPLEXES

Authors
DAS S SAHA A MANDAL PC
Citation
S. Das et al., STUDIES ON THE FORMATION OF CU(II) AND NI(II) COMPLEXES OF 1,2-DIHYDROXY-9,10-ANTHRAQUINONE AND LACK OF STIMULATED SUPEROXIDE FORMATION BY THE COMPLEXES, Talanta, 43(1), 1996, pp. 95-102
Citations number
57
Journal title
Talanta
ISSN journal
00399140 → ACNP
Volume
43
Issue
1
Year of publication
1996
Pages
95 - 102
Database
ISI
SICI code
0039-9140(1996)43:1<95:SOTFOC>2.0.ZU;2-Z
Abstract
Formation of Cu(II) and Ni(II) complexes of 1,2,-dihydroxy-9,10-anthra quinone (DHA) has been studied by the spectrophotometric method. Both the metals form stable complexes of the type [M(LH)(3)](-) where LHH(1 ) represents DHA. The effective stability constant of the Cu(II) compl ex is 5.135 x 10(29) while that of the Ni(II) complex is 3.446 x 10(25 ). These complexes, unlike free DHA, do not catalyze the flow of elect rons from NADH to molecular O-2 through NADH dehydrogenase.