Synthesis, structure, and properties of coordination compounds of copper(II) acetate with substituted 2-{[2-(2-hydroxyethylamino)ethylimino]methyl}phenol

• Published in: Russian journal of general chemistry Vol. 81; no. 9; pp. 1859 - 1866
• Main Authors: Gulya, A. P., Chumakov, Yu. M., Tsapko, V. I., Graur, V. O., Lozan-Tyrshu, K. S., Janno, E., Antosyak, B. Ya, Rudik, V. F.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-09-2011
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Complete Thermal Decomposition; Ethylimino; Imine Nitrogen Atom; Coordination Compound; Copper Acetate
• ISSN: 1070-3632; 1608-3350
• DOI: 10.1134/S1070363211090209

Salicylic, 5-chloro-5-bromo-5-nitro-, 3-methoxysalicylic, 2-hydroxy-1-naphthoic aldehydes and 2,3-, 2,4-, and 2,5-dihydroxybenzaldehyde were shown to react in ethanol with 2-(2-aminoethylamino)ethanol in the presence of copper acetate hydrate forming coordination compounds Cu(L
1-9
)CH
3
COO {HL
1-8
, 2-([2-(2-hydroxyethylamino)ethylimino]methyl}phenol (HL
1
) and respective chloro(HL
2
), bromo- (HL
3
), nitro- (HL
4
), methoxy- (HL
8
), or hydroxy-substituted (HL
5-7
); HL
9
, 2-{[2-(2-hydroxyethylamine)ethylimino] methylnaphthol)}. Structure of the complex Cu(L
3
)CH
3
COO was determined by X-ray diffraction analysis. Coordination polyhedron of its central atom is a distorted tetragonal bipyramid with (4+1+1) modes of coordinating the copper atom. The bipyramid base is formed by the atoms of phenol oxygen and of azomethine and imine nitrogen atoms of the ligand (HL
3
) and the oxygen atom of the acetate ion. Axial apices of the bipyramid are occupied by the alcohol oxygen atoms of the azomethine (HL
3
) and the second oxygen atom of the acetate ion. Other complexes are also of monomer structure. Azomethines (HL
1-9
) behave as monodeprotonated tetradentate O,N,N,O ligands. The thermolysis of substances includes a stage of complete thermal decomposition (360–530°C). Synthesized complexes show selective antimicrobial activity against a series of standard strains of
Staphylococcus aureus
and
E. coli
at the concentration in the range of 75–300 μg ml
−1
.