The facile preparation and structural characterization of two new isostructural 2D coordination polymers, {[M2(bbit)3Cl2][MCl4]}n [where M=Zn and Cd; bbit=1,1-bis (3-methyl-4-imidazoline-2-thione) butane]

• Published in: Polyhedron 2017-10, Vol.135, p.258-264
• Main Authors: Beheshti, Azizolla, Pour, Maryam Bahrani, Abrahams, Carmel T., Motamedi, Hossein
• Format: Article
• Language: English
• Subjects: Antibacterial assessment; Core-shell metal exchange; Crystal structure; Metal exchange; Zn(II) and Cd(II) coordination polymers
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2017.07.019

Two 2-D coordination polymers of the bbit ligand with Zn(II) and Cd(II) ions have been successfully synthesized. Polymer 1 was synthesized by a one-pot reaction, while compound 2 was prepared via substitution of the Zn(II) ion in 1 by the Cd(II) ion. The synthesized polymers exhibit antibacterial activities. [Display omitted] Two new isostructural Zn(II) and Cd(II) coordination polymers, namely {[Zn2(bbit)3Cl2][ZnCl4]}n (1) and {[Cd2(bbit)3Cl2][CdCl4]}n (2), have been synthesized and structurally characterized. These compounds represent the first examples of cationic coordination polymers with a tetrahedral MS3Cl [M=Zn(II) and Cd(II)] repeating unit. Each of these units is bridged to three symmetry-related ones through the bbit ligands. The 2D [M2(bbit)3Cl2]2+ cationic networks stack in an ABAB… sequence along the c-direction. From MIC, MBC and DNA cleavage activity studies, it can be concluded that the title compounds possess antibacterial activity.