X-ray, spectroscopic and semiempirical investigation of the structure of lasalocid 6-bromohexyl ester and its complexes with alkali metal cations

► A new ester derivative of antibiotic lasalocid as a useful metal cation ligand. ► X-ray and spectroscopic characterization of the ligand and prepared complexes. ► Semiempirical calculation of studied complexes.