6533b86dfe1ef96bd12c9753

RESEARCH PRODUCT

Synthesis of isomorphous cobalt and nickel thiocyanate coordination compounds: Effect of metals on compound properties

Carlos J. Gómez GarcíaAnissa HannachiMohamed RzaiguiWajda SmiraniArto Valkonen

subject

magneettiset ominaisuudetchemistry.chemical_element010402 general chemistry01 natural sciencesCoordination complexInorganic ChemistryMetalchemistry.chemical_compoundTransition metalMaterials Chemistrycobalt coordination compoundkobolttiPhysical and Theoretical Chemistryantimikrobiset yhdisteetchemistry.chemical_classificationThiocyanate010405 organic chemistryHydrogen bondLigandantibacterial activitieskompleksiyhdisteetnickel coordination compound0104 chemical sciencesCrystallographychemistryvisual_artvisual_art.visual_art_mediummagnetic propertiesisomorphous structurenikkeliCobaltSingle crystal

description

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. peerReviewed

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