@conference{
author = "Lađarević, Jelena and Radovanović, Lidija and Božić, Bojan and Mašulović, Aleksandra and Rogan, Jelena and Mijin, Dušan",
year = "2021",
abstract = "Heterociklične azo boje zauzimaju značajno mesto u oblasti koordinacione hemije, usled
njihove široke upotrebe u elektrohemijskim i optičkim istraživanjima [1]. Sa drugestrane, kompleksi metala sa heterocikličnim ligandima imaju značajan biološki potencijal, jer ispoljavaju citotoksičnost, antimikrobnu i antioksidativnu aktivnost [2]. U ovom radu, azoboja na bazi piridona
(5-(4-metoksifenilazo)-1-etil-3-cijano-6-hidroksi-4-metil-2-piridon, HL) je upotrebljena za kompleksiranje sa Cu(II)-jonima u N,N-dimetilformamidu (DMF) na sobnoj temperaturi. Dobijeni
kompleks (CuL2(DMF)) je okarakterisan UV-Vis i ATR-FTIR spektroskopijom, kao i rendgenskom strukturnom analizom. Asimetrična jedinica
kompleksa se sastoji iz jednog Cu(II)-atoma, dva
helatna L-liganda i jednog koordiniranog molekula
DMF (slika 1). Geometrija oko Cu(II)-atoma je kvadratno-piramidalna, čiju baznu ravan čine dva Oatoma i dva N-atoma iz dva L-liganda, dok apikalni
položaj zauzima O-atom iz koordiniranog molekula
DMF. Kristalno pakovanje uspostavljeno je
prisustvom različitih nekovalentnih interakcija među
diskretnim jedinkama kompleksa (C–H···O, π–π i
slobodan elektronski par–π).
Antioksidativna aktivnost polazne azo boje i
kompleksa je određena pomoću ABTS (2,2’-
azinobis(3-etilbenzotiazolin-6-sulfonat) testa.
Kompleks je pokazao značajniju antioksidativnu
aktivnost u odnosu na polaznu azo boju i askorbinsku
kiselinu korišćenu kao standard. Kristalografski podaci: C70H74N18O14Cu2, Mr = 1518,55, trikliničan sistem, prostorna grupa P ,
a = 10,191(2), b = 13,012(3), c = 14,692(3) Å, α = 79,73(3), β = 71,96(3), γ = 80,20(3) °,
V = 1808,9(7) Å3
, R1 = 0,0539 za 4663 refleksija sa I 2σ(I)., In recent years, heterocyclic azo dyes have played significant role in the development of the
coordination chemistry, due to their wide application in the different fields of electrochemical and
optical studies [1]. Moreover, metal complexes with heterocyclic ligands in their architecture have
great biological potential since they exhibit cytotoxicity, antimicrobial and antioxidant activity [2].
In this work, pyridone azo dye (5-(4-methoxyphenylazo)-1-ethyl-3-cyano-6 hydroxy-4-methyl-2-
pyridone, HL) is used for the complexation with Cu(II) ions in N,N-dimethylformamide (DMF) at
room temperature. The obtained complex (CuL2(DMF)) is characterized by UV-Vis and ATRFTIR spectroscopy and single-crystal X-ray analysis. The asymmetric unit of complex is
comprised of one Cu(II) atom, two chelate L ligands and one coordinated DMF molecule (Figure
1). The coordination geometry of Cu(II) atom is
square-pyramidal with basal plane comprised of
two O and two N atoms originating from L ligands
while apical position is occupied by one O atom
from coordinated DMF. The crystal packing is
established with the presence of different noncovalent interactions between discrete complex
units (C–H···O/N, π–π and lone pair–π).
Furthermore, antioxidant activities of the
starting azo dye and the complex have been
evaluated by the ABTS (2,2’-azinobis-(3-
ethylbenzothiazoline-6-sulfonate)) radicalscavenging assay. The complex exhibited more
potent antioxidant activity than the starting dye
and ascorbic acid used as standard.
Crystal data: C70H74N18O14Cu2, Mr = 1518.55,
triclinic, space group P , a = 10.191(2),
b = 13.012(3), c = 14.692(3) Å, α = 79.73(3),
β = 71.96(3), γ = 80.20(3) °, V = 1808.9(7) Å3
, R1 = 0.0539 for 4663 observed reflections with
I 2σ(I).",
publisher = "Beograd : Srpsko kristalografsko društvo",
journal = "Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 16–17. septembar 2021",
title = "KRISTALNA STRUKTURA I ANTIOKSIDATIVNA AKTIVNOST Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE, CRYSTAL STRUCTURE AND ANTIOXIDANT ACTIVITY OF Cu(II) COMPLEX OF AZO PYRIDONE DYE",
pages = "37-36",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6726"
}