A1 Journal article (refereed)
Synthesis of isomorphous cobalt and nickel thiocyanate coordination compounds : effect of metals on compound properties (2019)

Hannachi, A., Valkonen, A., Gómez García, C. J., Rzaigui, M., & Smirani, W. (2019). Synthesis of isomorphous cobalt and nickel thiocyanate coordination compounds : effect of metals on compound properties. Polyhedron, 173, Article 114122. https://doi.org/10.1016/j.poly.2019.114122

JYU authors or editors

Publication details

All authors or editors: Hannachi, Anissa; Valkonen, Arto; Gómez García, Carlos J.; Rzaigui, Mohamed; Smirani, Wajda

Journal or series: Polyhedron

ISSN: 0277-5387

eISSN: 1873-3719

Publication year: 2019

Volume: 173

Article number: 114122

Publisher: Elsevier

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1016/j.poly.2019.114122

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65617


The reaction of 2-methylpiperazine with the thiocyanate ligand and two transition metals leads to the production of two new isomorphous [ML2SCN4] where L is the 2-methylpiperazine and [M =Co (1), and Ni (2)], presenting an octahedral configuration. These compounds were characterized by single crystal X-ray crystallography, TG-DTA analysis, as well as infrared and UV-Vis spectroscopy and TG-DTA. The magnetic and antibacterial properties were also determined. Through the link with N-H···S hydrogen bonds, a global 3D network was established. The studied compounds show the metal center’s impact leading to different properties. Indeed, the first compound shows high spin orbit coupling, whereas the second one shows a weak antiferromagnetic interaction. The antibacterial activity is enhanced for the cobalt compound compared with the nickel compound and the DTA/TG curves show a phase transition for the nickel compound.

Keywords: coordination complexes; cobalt; nickel; antimicrobial compounds; magnetic properties

Free keywords: nickel coordination compound; cobalt coordination compound; isomorphous structure; antibacterial activities; magnetic properties

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1

Last updated on 2021-08-06 at 15:06