Chemistry
Document Type
Article
Abstract
The organic-inorganic compound (C5H14N2)[CoCl4]⸳0.5H2O, I, was characterized by various physicochemical techniques. The X-ray diffraction analysis revealed that the compound crystallizes in the centrosymmetric space group C2/c of the monoclinic system. The atomic arrangement the Co(II) complex is built from isolated [CoCl4]2– anions, 1-methylpiperazine-1,4-diium [C5H14N2]2+ cations and free water molecules. The crystal structure study showed that the cohesion of I is assured through N–H···Cl and N–H···O hydrogen bonds giving birth to a 3-D architecture. Hirshfeld surface analysis revealed that Cl···H/H···Cl and H···H (58.5 and 36.4%, respectively) are the most significant interactions between species. Minor O···H/H···O interactions are also present. The compound was characterized by thermal analysis, TGA-DTA showed the removal of the co-crystallized water before 100 °C and a first mass loss at around 120 °C. Magnetic measurements are in good agreement with isolated, S = 3/2, tetrahedral [CoCl4]2− anions. The negative Weiss constant of -1.35 indicates single-ion anisotropy and very weak antiferromagnetic interactions. UV–visible spectroscopy reveals three weak absorption bands in the visible range due to the d-d electronic transitions typical of the Co(II) tetra-coordinated. A bioassay showed antibacterial activity against the gram negative Klebsiella pneumonia and gram positive Bacillus ceureus, Listeria monocytogenes, and Micrococcus lutues.
Publication Title
Chemical Physics Impact
Publication Date
6-2024
Volume
8
ISSN
2667-0224
DOI
10.1016/j.chphi.2024.100597
Keywords
biological activities, Cobalt (II), crystal structure, Hirshfeld surfaces, magnetic properties
Repository Citation
Walha, Sandra; Mhadhbi, Noureddine; Ali, Basem F.; Kaiba, Abdellah; Guesmi, Ahlem; El-Fattah, Wesam Abd; Hamadi, Naoufel Ben; Turnbull, Mark M.; Costantino, Ferdinando; and Naïli, Houcine, "Hydrothermal synthesis of (C5H14N2)[CoCl4]⸳0.5H2O: Crystal structure, spectroscopic characterization, thermal behavior, magnetic properties and biological evaluation" (2024). Chemistry. 30.
https://commons.clarku.edu/chemistry/30
Creative Commons License
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