Five manganese complexes of Schiff b ase were synthesized:[Mn Ⅳ,Ⅳ (μ-O)(Salen)] 2 ·DMF ·H 2 O(1),[Mn Ⅳ,Ⅳ (μ-O)(5-BrSalen)] 2 ·DMF ·0.5H 2 O(2),[Mn Ⅳ,Ⅳ (μ-O)]al(1,2-pn)[nr 2 ·H 2 O(3),]Mn Ⅳ,Ⅳ (μ-O)[5-Br-Sal(1,2-pn)]r 2 ·H 2 O(4),[Mn Ⅳ,Ⅳ (μ-O)]5-CH 3 -Sal(1,2-pn)5-CH 3 -Sal(1,2-pn)[ 2 ·2H 2 O(5),and were characterized by element analysis,IR and UV-Vis spec tra.The results of cyclic voltammogram show that Schiff base ligands can drop the potential of manganese and s teady high oxide state of manganese.The magnetic properties of1and3have also been studied.The results show t hat there is a weak ferromagneticall y coupling of Mn Ⅳ2 pair at room and low temperature,and the interactions o f complex3are weaker than complex1.
A novel two-dimensional network manganese(Ⅱ) polymer complex [Mn(O2CCH2CI)2-(phen)]n has been synthesized and characterized by elemental analysis and IR spectrum. The crystal structure of title complex has also been determined, which is in monoclinic of a space group P21/c with the following unit cell parameters at 294K: a=1.9738(4) nm, b =1.1384(2) nm, c =0.74915(14) nm, V =1.6795(5) nm3, Z= 2.
LI Jun ZHANG Jinhua WU Aizhi XI Yun GUO Hui ZHANG Fengxing
Two supramolecular complexes [Zn（tacd）2]（C6H8O4）·6H2O（1） and [Cu（tacd）2]Cl2·4H2O（2） were synthesized and characterized by elemental analysis, IR spectra, TGA and single-crystal X-ray diffraction analysis. The crystal structure showed that the metal ions in complexes 1 and 2 had similar coordination circumstance. But for the complex 2, it formed a novel two-dimensional supramolecular network with 12-membered rings and four-membered rings via hydrogen bond interaction. The thermal gravimetric analyses indicated that the two complexes had similar steps of weight-loss. On the basis of experiment, the two complexes were calculated by DFT-B3LYP/6-31G（d） in Gaussian 03. The results of calculation are in good agreement with the experiment.
