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
A one dimensional bimetallic compound ｛〔CuCd(pba)(H 2O) 3〕·2H 2O｝ n in which pba was propylenebis (oxamic acid), was prepared. Crystal structure of the title compound was determined. It belongs to orthorhombi...A one dimensional bimetallic compound ｛〔CuCd(pba)(H 2O) 3〕·2H 2O｝ n in which pba was propylenebis (oxamic acid), was prepared. Crystal structure of the title compound was determined. It belongs to orthorhombic system, molecular formula CuCdC 7H 16 N 2O 11 , M r =480.17, space group Pnma(#62), a=12.953(2), b=21 626(6), c=5.253(3), V=1471(2) 3 and D x =2.17g/cm 3 for Z =4. The structure was solved by direct methods with final R =0.052 and R w =0.063 for 1055 observed reflections with I>3σ(I ). Two nitrogen atoms and two oxygen atoms from the oxamide and a water molecule coordinated to the Cu II ion forming a square pyramidal geometry. Four oxygen atoms from the oxamide and two water molecules coordinated to the Cd II ion forming an elongated octahedral geometry.展开更多
A new Shift bases was synthesized by the reaction of p-dimetyl-amino-benzylaldehide and α-naftyl-amine. All synthesized compounds were characterized by elemental analysis, IR （infra red） spectroscopy and NMR （nucl...A new Shift bases was synthesized by the reaction of p-dimetyl-amino-benzylaldehide and α-naftyl-amine. All synthesized compounds were characterized by elemental analysis, IR （infra red） spectroscopy and NMR （nuclear magnetic resonance） spectroscopy and evaluated for their in vitro antifungal activities of the compounds tested against Pseudomonas aeruginosa, Mycobacterium lacticolium, Aspergillus niger, Cladasporium resinale, Penicillium chrosegenum, Chastorniurn gloloodium and Trichoderma virideh. These derivatives have vast range of biological activities which benefit us.展开更多
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.
文摘A one dimensional bimetallic compound ｛〔CuCd(pba)(H 2O) 3〕·2H 2O｝ n in which pba was propylenebis (oxamic acid), was prepared. Crystal structure of the title compound was determined. It belongs to orthorhombic system, molecular formula CuCdC 7H 16 N 2O 11 , M r =480.17, space group Pnma(#62), a=12.953(2), b=21 626(6), c=5.253(3), V=1471(2) 3 and D x =2.17g/cm 3 for Z =4. The structure was solved by direct methods with final R =0.052 and R w =0.063 for 1055 observed reflections with I>3σ(I ). Two nitrogen atoms and two oxygen atoms from the oxamide and a water molecule coordinated to the Cu II ion forming a square pyramidal geometry. Four oxygen atoms from the oxamide and two water molecules coordinated to the Cd II ion forming an elongated octahedral geometry.
文摘A new Shift bases was synthesized by the reaction of p-dimetyl-amino-benzylaldehide and α-naftyl-amine. All synthesized compounds were characterized by elemental analysis, IR （infra red） spectroscopy and NMR （nuclear magnetic resonance） spectroscopy and evaluated for their in vitro antifungal activities of the compounds tested against Pseudomonas aeruginosa, Mycobacterium lacticolium, Aspergillus niger, Cladasporium resinale, Penicillium chrosegenum, Chastorniurn gloloodium and Trichoderma virideh. These derivatives have vast range of biological activities which benefit us.
