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Thiocyanate precursor impact on the formation of cobalt complexes: Synthesis and characterization

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Thiocyanate precursor impact on the formation of cobalt complexes: Synthesis and characterization. / Hannachi, Anissa; Valkonen, Arto; Rzaigui, Mohamed; Smirani, Wajda.

In: Polyhedron, Vol. 161, 15.03.2019, p. 222-230.

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Hannachi, A, Valkonen, A, Rzaigui, M & Smirani, W 2019, 'Thiocyanate precursor impact on the formation of cobalt complexes: Synthesis and characterization', Polyhedron, vol. 161, pp. 222-230. https://doi.org/10.1016/j.poly.2018.12.039

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Hannachi, Anissa ; Valkonen, Arto ; Rzaigui, Mohamed ; Smirani, Wajda. / Thiocyanate precursor impact on the formation of cobalt complexes: Synthesis and characterization. In: Polyhedron. 2019 ; Vol. 161. pp. 222-230.

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@article{c4b0085d973a44f791565848104280e0,
title = "Thiocyanate precursor impact on the formation of cobalt complexes: Synthesis and characterization",
abstract = "Two new thiocyanate complexes have been synthesized with two different thiocyanate anion sources using 1-(2-Pyrimidyl) piperazine andCoCl2.6H2O. These compounds were characterized by single X-ray diffraction, FTIR, UV-Visible and TGA-DTA. The antibacterial activity was also examined. The XRD showed that compounds 1 and 2 crystallized into monoclinic and orthorhombic systems respectively. In compound 1, cobalt is surrounded by two isothiocyanate anions and two nitrogen-amides, while in compound 2 it is surrounded by four isothiocyanate ligands and a separate protonated amide. Different interactions packed the system through N-H···S, N-H···O and O-H ···S hydrogen bonds forming a ring. Gap energy determination revealed two diverse behaviors, the first being characteristic of a semiconductor and the second of an insulator. In the 10-500 °C range, the thermal behaviors were investigated and showed the decomposition of the two complexes with metal complexes residues. The antibacterial analysis presented a weak performance.",
keywords = "Thiocyanate precursor, Metal complexes, Crystal structures",
author = "Anissa Hannachi and Arto Valkonen and Mohamed Rzaigui and Wajda Smirani",
year = "2019",
month = "3",
day = "15",
doi = "10.1016/j.poly.2018.12.039",
language = "English",
volume = "161",
pages = "222--230",
journal = "Polyhedron",
issn = "0277-5387",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Thiocyanate precursor impact on the formation of cobalt complexes: Synthesis and characterization

AU - Hannachi, Anissa

AU - Valkonen, Arto

AU - Rzaigui, Mohamed

AU - Smirani, Wajda

PY - 2019/3/15

Y1 - 2019/3/15

N2 - Two new thiocyanate complexes have been synthesized with two different thiocyanate anion sources using 1-(2-Pyrimidyl) piperazine andCoCl2.6H2O. These compounds were characterized by single X-ray diffraction, FTIR, UV-Visible and TGA-DTA. The antibacterial activity was also examined. The XRD showed that compounds 1 and 2 crystallized into monoclinic and orthorhombic systems respectively. In compound 1, cobalt is surrounded by two isothiocyanate anions and two nitrogen-amides, while in compound 2 it is surrounded by four isothiocyanate ligands and a separate protonated amide. Different interactions packed the system through N-H···S, N-H···O and O-H ···S hydrogen bonds forming a ring. Gap energy determination revealed two diverse behaviors, the first being characteristic of a semiconductor and the second of an insulator. In the 10-500 °C range, the thermal behaviors were investigated and showed the decomposition of the two complexes with metal complexes residues. The antibacterial analysis presented a weak performance.

AB - Two new thiocyanate complexes have been synthesized with two different thiocyanate anion sources using 1-(2-Pyrimidyl) piperazine andCoCl2.6H2O. These compounds were characterized by single X-ray diffraction, FTIR, UV-Visible and TGA-DTA. The antibacterial activity was also examined. The XRD showed that compounds 1 and 2 crystallized into monoclinic and orthorhombic systems respectively. In compound 1, cobalt is surrounded by two isothiocyanate anions and two nitrogen-amides, while in compound 2 it is surrounded by four isothiocyanate ligands and a separate protonated amide. Different interactions packed the system through N-H···S, N-H···O and O-H ···S hydrogen bonds forming a ring. Gap energy determination revealed two diverse behaviors, the first being characteristic of a semiconductor and the second of an insulator. In the 10-500 °C range, the thermal behaviors were investigated and showed the decomposition of the two complexes with metal complexes residues. The antibacterial analysis presented a weak performance.

KW - Thiocyanate precursor, Metal complexes, Crystal structures

U2 - 10.1016/j.poly.2018.12.039

DO - 10.1016/j.poly.2018.12.039

M3 - Article

VL - 161

SP - 222

EP - 230

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

ER -