Metal template reactions. XIX. Macrocyclic metal complexes derived from 2,2'-iminobisbenzaldehyde and some primary diamines with additional nitrogen donor atoms

Abstract

Macrocyclic nickel(II), copper(II) and cobalt(II) complexes (6), (7), (9), (11), (13), (17) and (19) have been prepared from 2,2'-iminobisbenzaldehyde, the appropriate metal salt and the primary diamines 3,3'-iminobispropylamine (4), 2,2'iminobisethylamine (9, 2,2'-(iminodimethylene)bisaniline (8), azobenzene-2,2'-diamine (10), 2,2'-iminobisaniline (12), 2-amino-N-(2'-aminophenyl)benzamide (16) and 2-amino-N-(2'-aminobenzoyl)benzamide (18) respectively. The nickel(II) complex (15), zinc(11) complex (21) and copper(II) complex (22) were also prepared by similar methods. 2,2'-(Benzene- 1,2-diyldiimino)bisbenzaldehyde (25) was prepared but did not undergo metal template reactions to allow the formation of macrocyclic complexes.