# Synthesis, Structure and Antibacterial Activity of Two Novel Coordination Polymers Based on N,N′-bis(4-carbozvlbenzvl)-4-aminotoluene and Heterocyclic Ligand against S. aureus

## TL;DR

This paper reports the synthesis and antibacterial activity of two new coordination polymers that effectively inhibit the growth of S. aureus.

## Contribution

The study introduces two novel coordination polymers with demonstrated antibacterial activity against S. aureus.

## Key findings

- Compounds 1 and 2 show good antibacterial activity against S. aureus.
- Higher concentrations of the compounds lead to stronger inhibition of S. aureus.
- At 500 μg/mL and 400 μg/mL, the compounds completely inhibit S. aureus growth.

## Abstract

As the use of antibiotics increases, the increasing resistance of bacteria is the main reason for the reduced efficiency of antibacterial drugs, making the research of new antibacterial materials become new hot spot. In this article, two novel coordination polymers (CPs), namely, [Cd2(L)2(bibp)2]n (1) and [Ni(L)(bib)]n (2), where H2L = N,N′-bis(4-carbozvlbenzvl)-4-aminotoluene, bibp = 4,4′-bis(imidazol-1-yl)biphenyl, and bib = 1,3-bis(1-imidazoly)benzene, have been synthesized under solvothermal and hydrothermal condition. Structural clarification was performed through infrared spectrum and single-crystal X-ray diffraction analysis, while thermal analysis and XRD technology were used for the performance assessment of compounds 1 and 2. In addition, antibacterial performance experiments showed that compounds 1 and 2 have certain selectivity in their antibacterial properties and have good antibacterial properties against S. aureus. As the concentration of the compound increases, the inhibitory effect gradually strengthens, and when the concentration of the compound reaches 500 μg/mL and 400 μg/mL, the concentration of the S. aureus solution no longer increases and has been completely inhibited.