Four new coordination compounds, [Zn(dba)(bpy)]n (1), {[Zn(dba)(phen)]·2H2O}n (2), [Cd(dba)(bpy)(H2O)2] (3) and [Cd2(dba)2(phen)2]n (4) (H2dba = 2,5-dihydroxy-p-benzenediacetic acid, bpy = 2,2′-bipyridine, phen = 1,10-phenanthroline) have been prepared via solvothermal method and characterized by sin-gle-crystal X-ray diffraction, infrared spectroscopy, elemental analysis and powder X-ray diffraction. 1 and 2 possess 1D infinite chain structures. Complex 3 exhibits a mononuclear structure. Complex 4 owns binuclear symmetry units, which were bridged via the dba ligands forming a 2D framework. The fluorescence properties of 1―4 have been studied.
ZHAO LiMin, REN Peng, ZHANG ZhenJie, FANG Ming, SHI Wei & CHENG Peng Department of Chemistry, Nankai University, Tianjin 300071, China
A novel heterospin one-dimensional (1-D) chain complex containing both Cu(Ⅱ) and nitroxide radical ligands, {[Cu(tcph)(H2O)4][Cu(tcph)(NIT3Py)2]·2H2O}n (1) (H2tcph = tetrachloro-phthalic acid, NIT3Py = 2-(3′-pyridyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide), has been synthesized and structurally characterized. The structure consists of neutral chains of copper(Ⅱ) ions bridged by tcph and coordinated alternatively by nitroxide radicals as spin branches and solvated water as co-ligand. The magnetic data were fitted using an approximate theoretical model based on population analysis to obtain the coupling parameter values of JCu2-Rad = 22.4 cm-1 and J′Cu1-Cu2 = -2.4 cm-1, indicating the intramolecular ferromagnetic interaction between Cu(Ⅱ) and NIT3Py and weak antiferromagnetic interaction between Cu1 and Cu2 linked by tcph.
MA Yue, CHEN XiaoPing, CAO Dong, YAN ShiPing & LIAO DaiZheng Department of Chemistry, Nankai University, Tianjin 300071, China
