REACTIVITY OF PYRROLE PIGMENTS .20. ON THE STRUCTURE OF CU(II) AND ZN(II) TRIPYRRIN-1-ONE CHELATES IN SOLUTION

Authors
JAUMA A FARRERA JA RIBO JM
Citation
A. Jauma et al., REACTIVITY OF PYRROLE PIGMENTS .20. ON THE STRUCTURE OF CU(II) AND ZN(II) TRIPYRRIN-1-ONE CHELATES IN SOLUTION, Monatshefte fuer Chemie, 127(8-9), 1996, pp. 935-946
Citations number
22
Categorie Soggetti
Chemistry
Journal title
Monatshefte fuer Chemie → ACNP
ISSN journal
00269247
Volume
127
Issue
8-9
Year of publication
1996
Pages
935 - 946
Database
ISI
SICI code
0026-9247(1996)127:8-9<935:ROPP.O>2.0.ZU;2-J
Abstract
The Cu(II) and Zn(II) chelates of 4-dimethyl-2,3,7,8-tetraethyl-15H-tr ipyrrin-1-one, 3-dimethyl-2,3,7,8-tetraethyl-15H-tripyrrin-1-one, and their sulfonate derivatives are studied. The chelates show the expecte d structure of an NH dideprotonated ligand chelating the metal ion. Ho wever, in the case of the Zn chelate of 14-dimethyl-2,3,7,8-tetraethyl -15H-tripyrrin-1-one the ligand is only monodeprotonated, and the lact am ring is tautomerized to a hydroximino function.