High Axial Coordination in a cis-Coordinated Succinimidatocopper(II) Complex

Abstract

A copper(II) complex [Cu(succim)2(N-Eten)(H2O)2] (succim = succinimidate and N-Eten = N-ethylethylenediamine) was prepared and characterized by X-ray crystallography and polarized crystal electronic spectra. The complex has a distorted octahedral [CuN4O2] chromophore. The π-donor succim ligands on cis-positions raise the potential of axial coordination up to six-coordination to maintain electroneutrality of the complex.

Bis(N,N-dimethylethylenediamine-κ2N,N′)bis(perchlorato-κO)copper(II)

“…The N1ÐCu1ÐN2 bond angle of the chelate ligands is 85.40 (8) , which is slightly larger than that of the N-Meen complex [84.58 7]. The N1ÐC1ÐC2ÐN2 torsion angle [50.5 (3) ] is similar to that of related complexes involving mixed ligands (Akitsu & Komorita, 2002).…”

Synthesis and structural characterization of a novel peroxo bridged dinuclear cobalt(III) complex of succinimide showing three varieties of hydrogen bonding interactions

“…These results are in agreement with previous reports. [7][8][9][10][11][12][16][17] The presence of water in 1 is evidenced by the strong signal at 3437 cm -1 . The observed signals at 886 and 532 cm -1 are assigned for the vibrations of the peroxo moiety which is in accordance with literature reports 24,25 .…”

“…7,8 Various aliphatic amine derivatives of metal(II)-succinimidato complexes have been synthesized and recently some Cu(II)-succinimidato complexes have been characterized by X-ray diffraction. [9][10][11][12][13][14][15][16][17] The literature survey shows that the copper complexes of succinimide have been studied extensively, while there is no report on cobalt complexes of succinimide. Ethylenediamine (en), its salts, and its derivatives are frequently found in drugs as well as biologically important molecules.…”

trans-Bis(4-aminopyridine-κN)bis(succinimidato-κN)copper(II) dihydrate

“…Komorita & Kushi, 2001). Furthermore, five-coordinate CuN 4 O or six-coordinate CuN 4 O 2 square-bipyramidal chromophores have been reported for cis-forms with bidentate diimine (Akitsu et al, 1999) or bidentate amine (Akitsu & Komorita, 2002). However, the related Cu II complexes with amine ligands containing two different coordinating N atoms have not been reported so far.…”