Crystal structure, optical properties, Hirshfeld surface analysis and bactericidal activity of a new organic-inorganic hybrid: 4-methyl-1-(2'-nitrobenzyl)pyridinium tetrabromocuprate(II)

• Published in: Molecular Crystals and Liquid Crystals Vol. 768; no. 18; pp. 1200 - 1217
• Main Authors: Zhong, Pei-Shan, Zheng, Qing-Zhi, Hu, Bao-Yi, Jiang, Yan, Li, Xin-Ran, Li, Xiang-Ling, Zhou, Jia-Rong, Ni, Chun-Lin
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 11.12.2024; Taylor & Francis Ltd
• Subjects: Anions; Antibacterial activities; Cations; Charge transfer; Crystal growth; Crystal structure; Crystallization; Crystals; E coli; Evaporation; Hirshfeld surface analysis; Optical properties; organic-inorganic hybrid; Surface analysis (chemical); Tetrabromocuprate(II); Thermogravimetric analysis
• ISSN: 1542-1406; 1563-5287; 1527-1943
• DOI: 10.1080/15421406.2024.2390293

In this work, an organic-inorganic hybrid crystal with excellent bactericidal activity, 4-methyl-1-(2'-nitrobenzyl)pyridinium tetrabromocuprate(II) ([4Me2NO 2 BzPy] 2 [CuBr 4 ]), was synthesized by the crystal growth by a slow evaporation method and characterized. [4Me2NO 2 BzPy] 2 [CuBr 4 ] crystallized in the orthorhombic space group Pna2 1 . Hirshfeld surface analysis indicated that the H···H (28.8%), H···Br/Br···H (27.0%), and O···H/H···O (17.5%) interatomic contacts played a primary role in contributing to the stacking of the crystals. Thermogravimetric analysis showed that the material was stable up to 192.5 °C. The charge transfer interaction between anions and cations was explained by UV-Vis diffuse reflectance spectroscopy. [4Me2NO 2 BzPy] 2 [CuBr 4 ] exhibited favorable bactericidal activity against Staphylococcus aureus and Escherichia coli.