Synthesis, crystal structure and antibacterial activity of azido complexes of cobalt(III) containing heteroaromatic Schiff bases

Autor(en)
Debasis Bandyopadhyay, Manas Layek, Michel Fleck, Rajat Saha, Corrado Rizzoli
Abstrakt

Three new Schiff base complexes of cobalt(III) viz. [Co(L

1)(N

3)]

2(1), [Co(L

2)

2(N

3)

2]NO

3(2) and [Co(L

3)

2(N

3)

2]ClO

4(3), where H

2L

1 = N,N′-propane-1,3-diylbis[1-(pyrrol-2-yl)methanimine], L

2 = 1-[(thiophen-2-ylmethylidene)amino]propan-2-amine and L

3 = 1-[(3-methylthiophen-2-ylmethylidene)amino]propan-2-amine, have been prepared and characterized. The syntheses have been achieved by the reaction of cobalt(II) nitrate or perchlorate with the tetradentate Schiff base (H

2L

1) or the bidentate ligands L

2and L

3in presence of azide. All the complexes 1–3 have been characterized by microanalytical, spectroscopic, single crystal X-ray diffraction and other physicochemical studies. Structural studies reveal that all the complexes contain CoN

6chromophore in which the central Co(III) ions adopt distorted octahedral geometry. While 1 is a binuclear end-on bis(μ-azido) complex, both of 2 and 3 are mononuclear with two terminal azide ions disposed in cis positions. Structural studies reveal that weak intermolecular H-bonding or π…π interactions are operative to bind the complex units or the anions in the solid state. The antibacterial activity of all the complexes and their constituent Schiff base ligands has been tested against some Gram(+) and Gram(−) bacteria.

Organisation(en)
Institut für Mineralogie und Kristallographie
Externe Organisation(en)
Kazi Nazrul University, Bankura Christian College, Università degli studi di Parma
Journal
Inorganica Chimica Acta
Band
461
Seiten
174-182
Anzahl der Seiten
9
ISSN
0020-1693
DOI
https://doi.org/10.1016/j.ica.2017.02.018
Publikationsdatum
02-2017
Peer-reviewed
Ja
ÖFOS 2012
104015 Organische Chemie, 104017 Physikalische Chemie, 105113 Kristallographie
Schlagwörter
ASJC Scopus Sachgebiete
Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/9860bff5-5d4f-4399-92fb-45c2509aa6e4