作　　者： ; ; ; ;

机构地区： 广东食品药品职业学院药学系

出　　处： 《化学研究》 2012年第6期42-48,共7页

摘　　要： 以三(2-吡啶甲基)胺(tpa)作为螯合配体,合成了配合物[Ru(tpa)(H2biim)].(ClO4)2(1;H2biim=2,2′-联咪唑);利用紫外-可见吸收光谱仪和核磁共振谱仪研究了合成的配合物与Cl-、Br-、I-、NO3-、HSO4-、H2PO4-、OAc-、F-离子之间的作用.结果表明,配合物1与Cl-、Br-、I-、NO3-、HSO4-、H2PO4-之间存在氢键作用;当OAc-阴离子与1作用时,强的氢键作用使H2biim上的一个H转移到OAc-上,使1脱去一个质子,溶液颜色由浅黄绿色变为橘色.而F-能形成非常稳定的HF2-,可使配合物1联咪唑上的两个质子逐步脱去,相应的溶液颜色由浅黄绿色变为橘色,最终变为红色.因此,合成的配合物可以对多种阴离子实现目视识别. Complex [Ru（tpa）（H2biim）] ·（ClO4）2（1;H2biim = 2,2′-bisglyoxaline） was synthesized with tris（2-pyridylmethyl） amine（tpa） as a chelating ligand.The interactions between complex 1 and anions Cl-,Br-,I-,NO-3,HSO-4,H2PO-4,OAc-,and F-were studied by means of ultraviolet-visible light spectrometry and nuclear magnetic resonance spectroscopy.Results show that there exist hydrogen bonding interactions among compound 1 and anions Cl-,Br-,I-,NO-3,HSO-4,and H2PO-4,which makes it feasible for compound 1 to act as an eligible sensor for those anions.In terms of the interaction between compound 1 and OAc-anion,one hydrogen atom of H2biim is transfered to OAc-owing to strong hydrogen bonding interaction;as a result,one proton is removed form compound 1 resulting in change of solution color from light yellow-green to orange.In the case of F-,stepwise deprotonation of the two N-H fragments occurs owing to the formation of highly stable HF-2 anion,resulting in solution color change from light yellow-green to orange and to red.Therefore,compound 1 can be used to realize naked-eye identification of various anions.

关 键 词： 三 吡啶甲基 胺 钌配合物 氢键 去质子 目视识别

领　　域： [理学] [理学]