Abstract
Two tetrabromocuprate(II) salts with benzyl substituted pyridinium, [Bz-4-NH2Py]2[CuBr4] (1) and [Bz-4-N(CH3)2Py]2- [CuBr4] (2) ([Bz-4-NH2Py]+ = (1-benzyl-4′-aminopyridinium), [Bz-4-N(CH3)2Py]+ = 1-benzyl-4′-dimethylaminopyridinium) were crystallized from methanol and diluted in HBr solution. Compound 1 crystallizes in the orthorhombic Pna21, with 2 in the monoclinic P21/n. Two salts are composed of one tetrahedral [CuBr4]2− anion and two tortuous [Bz-4-NH2Py]+/[Bz-4-N(CH3)2Py]+ cations. The [CuBr4]2− anions in 1 form a linear chain, while the combination of C-H···π, C-H···Br, C-H···N weak hydrogen bonds and π···π interactions results in the forming of a 3D network structure of 1 and 2. The two salts show good antibacterial activities for E. coli and S. aureus.
Acknowledgments
This work has been partially supported by the Science and Technology Project (No. 2010B080701002, 2011B080701026) from the Guangdong Science and Technology Department and the key Academic Program of the 3rd phase “211 Project” of South China Agricultural University (No. 2009B010100001).