Cu(II), Mn(II) and Zn(II) complexes of hydrazones with a quaternary ammonium moiety

synthesis, experimental and theoretical characterization and cytotoxic activity

Nevena Lj. Stevanović (Author), Matija Zlatar (Author), Irena Novaković (Author), Andrej Pevec (Author), Dušanka Radanović (Author), Ivana Z. Matić (Author), Iztok Turel (Author), Božidar R. Čobeljić (Author), Marija Đorđić Crnogorac (Author), Tatjana Stanojković (Author), Miroslava Vujčić (Author), M. Gruden-Pavlović (Author), Dušan M. Sladić (Author), Katarina Anđelković (Author)

Abstract

In this paper, Cu(II), Mn(II) and Zn(II) complexes with N,N,N-trimethyl-2-oxo-2-(2-(1-(thiazol-2-yl)ethylidene)hydrazinyl)ethan-1-aminium chloride (HL$^1$Cl) were synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and DFT calculations. In all three complexes, a ligand (L$^1$) is coordinated in a deprotonated formally neutral zwitterionic form via NNO donor set atoms. Cu(II) and Zn(II) form mononuclear penta-coordinated complexes [CuL$^1$(N$_3$)(CH$_3$OH)]BF$_4$ and [ZnL$^1$(N$_3$)$_2$], respectively, while Mn(II) forms a binuclear [Mn$_2$L$^1$$_2$(μ-$_{1,1}$-N$_3$)$_2$(N$_3$)$_2$]·2CH$_3$OH complex, with unusual distorted trigonal-prismatic geometry around the metal centers. The antimicrobial activity of these complexes was tested against a panel of Gram-negative and Gram-positive bacteria, two yeasts and one fungal strain. The binuclear Mn(II) complex showed antifungal activity of similar intensity to amphotericin B. Based on the results of the brine shrimp test and DPPH radical scavenging activity, the most active Cu(II) and Mn(II) complexes were selected for evaluation of cytotoxic activity against five malignant cancer cell lines (HeLa, A375, MCF7, PC-3 and A549) and one normal cell line HaCaT. Both complexes showed significant activity. It should be pointed out that the activity of the Mn(II) complex against the MCF7 breast cancer cell line is only slightly weaker than that of cisplatin, but with selectivity to the tumor cell line in comparison to normal HaCaT cells, which is non-existent in the case of cisplatin.

Keywords

baker;mangan;cink;kovinski kompleksi;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
UDC:	546.3-304.6
COBISS:	93853699
ISSN:	1477-9234
Views:	50
Downloads:	27
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	baker;mangan;cink;kovinski kompleksi;
Type (COBISS):	Article
Pages:	str. 185-196
Volume:	ǂVol. ǂ51
Issue:	ǂiss. ǂ1
Chronology:	7 Jan. 2022
DOI:	10.1039/D1DT03169D
ID:	16706495