Synthesis, structures and properties of zinc and cadmium complexes with arylamine-modified 2-substituted 8‑hydroxyquinoline
摘要
Condensation of 8-hydroxy-2-quinolinecarbaldehyde and 3-bromoaniline, followed by reduction with NaBH4, afforded a new potential tridentate ligand of 2-(((3-bromophenyl)amino)methyl)quinolin-8-ol (HL), which was characterized by NMR spectroscopies and mass spectrometry. Treatment of HL with zinc acetate or cadmium acetate using solvothermal method gave a dinuclear complex [Zn2(κ2-N,O-L)2μ-(κ2-N,O-L)2]·2CH4O (1) and a tetranuclear complex [Cd4μ-(κ2-N,O-L)4μ-(κ3-N,N,O-L)2(κ2-O2CCH3)2] (2), respectively. The crystal structures of complexes 1 and 2 were determined with single-crystal X-ray diffractions and powder X-ray diffractions, showing the good ligating property and rich coordination modes of the ligand L−. Moreover, the complexes 1, 2 were characterized by infrared, NMR, UV–vis spectroscopies and mass spectrometry.