Tetragonal cobalt(III) complexes containing tetradentate macrocyclic amine ligands with different degrees of unsaturation

The versatile ruthenium(II/III) tetraazamacrocycle complexes and their nitrosyl derivatives

“…The Cu(II) complex was synthesized by the same method [81] [M(tim)] q+ (M = Ni(II), Co(III) and Fe(II)) complexes were prepared by first mixing butane-2,3-dione with propane-1,3-diamine, followed by addition of M(II) acetate to the mixture [82]. This template reaction was also used with amines and carbonyl compounds to obtain other unsaturated ligands, which were extracted with cyanide and used to synthesize complexes of various transition metal ions [81].…”

“…Condensation reactions under highly specific conditions have yielded series of complexes with 14-membered tetraazamacrocyclic ligands that vary in the extent of their unsaturation. The syntheses, structures, and properties of trans-[ML 1 L 2 (mac)] q+ (M = Co(III), Ni(II), and Fe(II)); and mac = tim, dim, or [14]-diene have been reported [81][82][83][84]. Preparation of [FeL 1 L 2 (tim)] 2+ by this method results in lower yields compared with Ni(II) and Co(III) complexes.…”

Trinuclear copper(II) complexes of some aza macrocycles

“…The structures of the macrocycles have been inferred from spectral studies, infrared spectra and proton magnetic resonance spectra. The infrared results are strongly suggestive of the cyclic nature of the macromolecules, with absence of the band due to coordinated or free amino groups [8,[11][12][13].…”

The preparation of a series of 12-, 13- and 14-membered tetra-imine macrocycles and characterization of their copper(II) complexes

“…Red complexes Cu(Ph4[12]TIM)X 2 (X=C1, Br, I, OAc) were readily prepared by the above procedure using the appropriate copper(II) salt. 1,2,8, Benzil (17g, 0.08mol) was dissolved in boiling MeOH (100cm 3) and a slight excess of 1,3-diaminopropane (3.4 cm 3, 0.042 mol) in MeOH was added dropwise to the hot solution. The mixture was refluxed for 1 h, then the volume was reduced to ca.…”

“…Macrocyclic imines have played an important role in the development of the coordination chemistry of macrocyclic ligands, typical examples being TIM (1) (1), DIM (2) (z) and the CR macrocycle (3) (3). This paper deals with the synthesis of the macrocycles Ph,[12]TIM (4), Phg[13]TIM (5) and Ph4 [14]TIM (6) and characterization of their copper(II) complexes.…”