Hydrothermal synthesis of (C5H14N2)[CoCl4]⸳0.5H2O: Crystal structure, spectroscopic characterization, thermal behavior, magnetic properties and biological evaluation

Authors

Sandra Walha, University of Sfax
Noureddine Mhadhbi, University of Monastir
Basem F. Ali, Al al-Bayt University
Abdellah Kaiba, Prince Sattam bin Abdulaziz University
Ahlem Guesmi, Imam Mohammad Ibn Saud Islamic University
Wesam Abd El-Fattah, Imam Mohammad Ibn Saud Islamic University
Naoufel Ben Hamadi, Imam Mohammad Ibn Saud Islamic University
Mark M. Turnbull, Clark UniversityFollow
Ferdinando Costantino, University of Perugia
Houcine Naïli, University of Sfax

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

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.