Synthesis, Crystal Structure, and Cytotoxic Property of bis(5-Chloro-2-nitrobenzoato)bis(2-piperidin-1-ylethylamine)disilver(I)

5-Chloro-2-nitrobenzoic acid reacts with silver oxide and 2-piperidin-1-ylethylamine to give a centrosymmetric dinuclear silver(I) complex, [Ag-2(C7H3ClNO4)(C7H16N2)(2)]. The complex was characterized by elemental analysis and X-ray diffraction. The two Ag atoms are bridged by two 2-piperidin-1-ylethylamine ligands, generating a 10-membered chelate ring. The distance between the two Ag atoms is 2.948(2) angstrom. Each Ag atom in the complex is three-coordinated by one primary amine and one ternary amine N atoms from two symmetry-related 2-piperidin-1-ylethylamine ligands, and by one carboxylate O atom of a 5-chloro-2-nitrobenzoate ligand, forming a distorted Y-shaped coordination. In the crystal structure, the molecules are linked through intermolecular N-H center dot center dot center dot O hydrogen bonds, forming chains running along the a-axis. The complex shows effective cytotoxic property to both carcinoma and normal cells.