The dinuclear complexes [Zn（MIMHA）]2（MIMHAH=N-[（1-methylimidazole-2-yl）methyl]-β-alanine） was prepared and characterized by single-crystal X-ray analysis.Crystal data:monlclineic,space group P21/c,a=8.792（2）,...The dinuclear complexes [Zn（MIMHA）]2（MIMHAH=N-[（1-methylimidazole-2-yl）methyl]-β-alanine） was prepared and characterized by single-crystal X-ray analysis.Crystal data:monlclineic,space group P21/c,a=8.792（2）,b=9.267（2）,c=16.942（2）?,β=99.5（2）,V=1351.6（2）?3,and Z=2.The zinc（Ⅱ） atom was co-ordinated in a tetrahedral geometry（N2Cl2）,which positions were occupied by one nitrogen atom and one oxygen atom from the ligand and two chlorine atoms.展开更多
The anion response characteristics of Salicylaldehyde-alanine-imidazole metallic complexes are described.The results show that the electrode based on Salicylaldehyde-alanine-imidazole copper（Ⅱ） [Cu（Ⅱ）-SAI] demon...The anion response characteristics of Salicylaldehyde-alanine-imidazole metallic complexes are described.The results show that the electrode based on Salicylaldehyde-alanine-imidazole copper（Ⅱ） [Cu（Ⅱ）-SAI] demonstrates excellent potentiometric response towards thiocyanate ion and anti-Hofmeister selectivity sequence in following order:SCN->ClO-4>Sal】I->Br->NO-2>NO-3>So-3>Cl->SO2-4>H2PO-4.The electrode shows a near-Nernstian potentiometric response to thiocyanate ion in a wide range of 1.0×10-1-3.0×10-6mol/L with a detection limit 1.0×10-6mol/L and a slope of-55.3 mV/decade in pH 5.0 of phosphate buffer solution at 20℃.The response mechanism is discussed in view of the A.C.impedance technique and the UV spectroscopy technique.The electrode exhibits the advantages of high selectivity,low detection limit,reproducibility and simplicity.The electrode was successfully applied to the determination of thiocyanate ion in waste water and human saliva.展开更多
文摘The dinuclear complexes [Zn（MIMHA）]2（MIMHAH=N-[（1-methylimidazole-2-yl）methyl]-β-alanine） was prepared and characterized by single-crystal X-ray analysis.Crystal data:monlclineic,space group P21/c,a=8.792（2）,b=9.267（2）,c=16.942（2）?,β=99.5（2）,V=1351.6（2）?3,and Z=2.The zinc（Ⅱ） atom was co-ordinated in a tetrahedral geometry（N2Cl2）,which positions were occupied by one nitrogen atom and one oxygen atom from the ligand and two chlorine atoms.
文摘The anion response characteristics of Salicylaldehyde-alanine-imidazole metallic complexes are described.The results show that the electrode based on Salicylaldehyde-alanine-imidazole copper（Ⅱ） [Cu（Ⅱ）-SAI] demonstrates excellent potentiometric response towards thiocyanate ion and anti-Hofmeister selectivity sequence in following order:SCN->ClO-4>Sal】I->Br->NO-2>NO-3>So-3>Cl->SO2-4>H2PO-4.The electrode shows a near-Nernstian potentiometric response to thiocyanate ion in a wide range of 1.0×10-1-3.0×10-6mol/L with a detection limit 1.0×10-6mol/L and a slope of-55.3 mV/decade in pH 5.0 of phosphate buffer solution at 20℃.The response mechanism is discussed in view of the A.C.impedance technique and the UV spectroscopy technique.The electrode exhibits the advantages of high selectivity,low detection limit,reproducibility and simplicity.The electrode was successfully applied to the determination of thiocyanate ion in waste water and human saliva.
