Novel coordination compounds: Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) cations with acesulfame/N,N-diethylnicotinamide ligands


Yildirim T., KÖSE D. A. , AVCI G. A. , ŞAHİN O., AKKURT F.

JOURNAL OF COORDINATION CHEMISTRY, vol.72, pp.3502-3517, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 72
  • Publication Date: 2019
  • Doi Number: 10.1080/00958972.2019.1705970
  • Title of Journal : JOURNAL OF COORDINATION CHEMISTRY
  • Page Numbers: pp.3502-3517
  • Keywords: Acesulfame, N, N-diethylnicotinamide, coordination compounds, anti-microbial studies, structural properties, thermal investigation, SPECTROSCOPIC CHARACTERIZATION, CRYSTAL-STRUCTURE, COMPLEXES, ACESULFAMATE, DFT

Abstract

Five coordination complexes with Mn2+ (1), Co2+ (2), Ni2+ (3), Cu2+ (4), and Zn2+ (5) containing acesulfame (ace) and N,N-diethylnicotinamide (dena) ligands were synthesized and structural binding properties investigated. Four compounds (1, 2, 4, and 5) were examined with single crystal X-ray diffraction methods. The structures containing Mn(II), Co(II), and Zn(II) were iso-structural. Six-coordination of metal cations were completed with two moles dena and four aqua ligands. The dena ligands were coordinated via pyridine nitrogen as neutral-monodentate. Charge stabilities of the complexes are complemented by two moles monoanionic ace ligands, located outside of the coordination unit. In the Cu(II) complex, the coordination is completed by acidic nitrogen and carbonyl oxygen atoms of two ace ligands and pyridine nitrogen of two moles dena ligands. The coordination to Cu(II) for ace ligands was monoanionic-bidentate. All metal cations in the structure are distorted octahedral. Thermal decomposition of complexes begins with removal of the aqua molecules from the structures and is completed by combustion of organic ligands. The final decomposition products of all structures have been identified as corresponding metal oxides. Some biological applications (anti-fungal/anti-bacterial) were studied using 1-5.