A series of novel lanthanide complexes with 2-bromine-5-methoxybenzoic acid and 2,2′-bipyridine: Syntheses, crystal structures, and luminescent properties

摘要: Abstract Six new lanthanide complexes [Ln(2-Br-5-MOBA)3(2,2′-DIPY)]2 (Ln = Nd(1), Eu(2), Gd(3), Tb(4), Ho(5), Er(6); 2-Br-5-MOBA = 2-bromine-5-methoxybenzoate; 2,2′-DIPY = 2,2′-bipyridine) have been successfully synthesized and characterized. The 1–5 are isostructural nine-coordinated by the single-crystal X-ray diffraction analyses, while complex 6 is eight-coordinated. difference of crystal structure may be result contraction effect. binuclear units were further assembled into 1D, 2D, 3D supramolecular structures π-π stacking C H⋯O hydrogen bonding interactions. thermal decomposition mechanism 1–6 was studied TG analysis authenticated TG/DSC-FTIR techniques. solid-state luminescence properties 2 4 investigated at room temperature. results indicate that show characteristic emission Eu3+ ion Tb3+ ion, respectively. What's more, title good antibacterial activities against Candida albicans.