A new supramolecular chromium(III) complex: Synthesis, structural determination, optical study, magnetic and antibacterial activity

• Published in: Journal of molecular structure Vol. 1152; pp. 294 - 302
• Main Authors: Dridi, Rihab, Dhieb, Cyrine, Cherni, Saoussen Namouchi, Boudjada, Nassira Chniba, Sadfi Zouaoui, Najla, Zid, Mohamed Faouzi
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.01.2018; Elsevier
• Subjects: Antimicrobial activity; Chemical Sciences; Cristallography; Crystal structure; Hirshfeld surfaces analyses; Magnetic properties; Spectroscopic studies; Thermal behavior; Antimicrobial activity; Spectroscopic studies; Hirshfeld surfaces analyses; Thermal behavior; Crystal structure; Magnetic properties
• ISSN: 0022-2860; 1872-8014; 0022-2860
• DOI: 10.1016/j.molstruc.2017.09.111

A new chromium (III) complex 1,5-Naphthyridine Trans-diaquadioxalatochromate (III) dihydrate, had been synthesized by self-assembly of chromium (III) nitrate with oxalic acid and 1,5-Naphthyridine. The complex was characterized by X-ray diffraction, Fourier Transform Infrared spectroscopy, thermogravimetric analysis and UV–Visible spectroscopy. The crystal morphology was carried out using Bravais–Friedel–Donnay–Harker (BFDH) model. Single crystal X-Ray structure determination revealed that the complex posses two crystallographically independent Cr(III) centers. Each Cr(III) has a distorted octahedron geometry involving two axial O atoms from two water molecules and four equatorial O atoms from two oxalate dianions forming trans-[Cr(C2O4)2(H2O)2]- complex anions. The charge compensation is accomplished by the incorporation of 1,5-Naphthyridine cations. Connection between these entities is ensured by means of strong hydrogen bonds giving rise to 3D supramolecular architecture. Hirshfeld surface analysis and the related 2D fingerprint plots were used for decoding plausible intermolecular interactions in the crystal packing. The magnetic properties of the complex had been investigated and discussed in the context of its structure. The antimicrobial activity was evaluated by disc diffusion method highlighting an antagonistic effect of the synthesized complex against Gram-positive and Gram-negative species. [Display omitted] •Synthesis of (C8H7N2)[Cr(C2O4)2(H2O)2]·2H2O by slow evaporation at room temperature.•Crystal structure and intermolecular interactions were determined by XRD.•The magnetic study shows the presence of an antiferromagnetic interaction.•The antibacterial activity of the synthesized complex was evaluated.