Synthesis and characterization of new metal(II) complexes with formates and some nitrogen donor ligands
作者:D. Czakis-Sulikowska、A. Czylkowska、J. Radwańska-Doczekalska、R. Grodzki、E. Wojciechowska
DOI:10.1007/s10973-006-7980-9
日期:2007.11
New mixed-ligands complexes with empirical formulae: M(2,4′-bpy)2L2·H2O (M(II)Zn, Cd), Zn(2-bpy)3L2·4H2O, Cd(2-bpy)2L2·3H2O, M(phen)L2·2H2O (where M(II)=Mn, Ni, Zn, Cd; 2,4′-bpy=2,4′-bipyridine, 2-bpy=2,2′-bipyridine, phen=1,10-phenanthroline, L=HCOO−) were prepared in pure solid state. They were characterized by chemical, thermal and X-ray powder diffraction analysis, IR spectroscopy, molar conductance in MeOH, DMF and DMSO. Examinations of OCO− absorption bands suggest versatile coordination behaviour of obtained complexes. The 2,4′-bpy acts as monodentate ligand; 2-bpy and phen as chelating ligands. Thermal studies were performed in static air atmosphere. When the temperature raised the dehydration processes started. The final decomposition products, namely MO (Ni, Zn, Cd) and Mn3O4, were identified by X-ray diffraction.
新型的混合配体配合物,其经验公式为:M(2,4′-bpy)2L2·H2O (M(II)=Zn, Cd), Zn(2-bpy)3L2·4H2O, Cd(2-bpy)2L2·3H2O, M(phen)L2·2H2O (其中 M(II)=Mn, Ni, Zn, Cd; 2,4′-bpy=2,4′-联吡啶,2-bpy=2,2′-联吡啶,phen=1,10-菲啰啉,L=HCOO−) 在纯固态中制备。这些配合物通过化学、热分析和X射线粉末衍射分析、红外光谱、在MeOH、DMF和DMSO中的摩尔电导率进行了表征。OCO−吸收带的检测表明所得配合物具有多样的配位行为。2,4′-bpy作为单齿配体;2-bpy和phen作为螯合配体。热研究在静态空气氛围中进行。当温度升高时,脱水过程开始。最终分解产物,即MO (Ni, Zn, Cd) 和 Mn3O4,通过X射线衍射鉴定。