Three new complexes of N salicylidenamino acid with Zn? have been synthesized. The compositions and structures of the obtained complexes have been characterized by elemental analyses, molar conductance, infrared spect...Three new complexes of N salicylidenamino acid with Zn? have been synthesized. The compositions and structures of the obtained complexes have been characterized by elemental analyses, molar conductance, infrared spectra, TG DTA and X ray powder diffraction. The three complexes have the compositions of Zn(sal β ala)·H2O(1),Zn(sal γ aba)·H2O(2),Zn(sal DL met)·1.5H2O(3)(sal=salicylidene,β ala=β alanine,γ aba=γ aminobutyric acid,DL met=DL methionine) and the molecular formula of ZnC10H11O4N, ZnC11H13O4N, ZnC12H16O4.5NS respectively. Infrared spectra of the complexes indicate that water has been coordinated. The thermal decomposition processes of the complexes show that the first weight losses are in good agreement with the water contents, and the compositions of the final residues are zinc oxide. The results of indexes to the X ray powder diffraction data indicate that the crystal structure of the three complexes belong to triclinic system. The lattice parameters are:a=1.9522nm,b=1.3904nm,c=2.0235nm,α=97.33°,β=98.66°,γ=99.05° for 1;a=1.3944nm,b=2.0880nm,c=2.4455nm,α=92.99°,β=95.48°,γ=96.18° for 2;a=2.1892nm,b=1.9171nm,c=1.4546nm,α=94.76°,β=95.09°,γ=94.12° for 3 respectively.展开更多
In this study,a number of amino acid schiff bases from vanillin and amino acid have been synthesized under microwave irradiation coupled with solvent-free condition,which proves to be simple and efficient.The structur...In this study,a number of amino acid schiff bases from vanillin and amino acid have been synthesized under microwave irradiation coupled with solvent-free condition,which proves to be simple and efficient.The structure of the prepared compounds are characterized by elemental analysis,IR,1H NMR and electronic spectra.展开更多
The activity on O-2 of ligands from ovanillin and amino acid and their complexes were studied in this paper.Results showed that ligands and their complexes may inhibit the formation of O-2.Zn(Ⅱ)complexes di...The activity on O-2 of ligands from ovanillin and amino acid and their complexes were studied in this paper.Results showed that ligands and their complexes may inhibit the formation of O-2.Zn(Ⅱ)complexes display remarkable activity of inhibiting the formation of O-2.展开更多
文摘Three new complexes of N salicylidenamino acid with Zn? have been synthesized. The compositions and structures of the obtained complexes have been characterized by elemental analyses, molar conductance, infrared spectra, TG DTA and X ray powder diffraction. The three complexes have the compositions of Zn(sal β ala)·H2O(1),Zn(sal γ aba)·H2O(2),Zn(sal DL met)·1.5H2O(3)(sal=salicylidene,β ala=β alanine,γ aba=γ aminobutyric acid,DL met=DL methionine) and the molecular formula of ZnC10H11O4N, ZnC11H13O4N, ZnC12H16O4.5NS respectively. Infrared spectra of the complexes indicate that water has been coordinated. The thermal decomposition processes of the complexes show that the first weight losses are in good agreement with the water contents, and the compositions of the final residues are zinc oxide. The results of indexes to the X ray powder diffraction data indicate that the crystal structure of the three complexes belong to triclinic system. The lattice parameters are:a=1.9522nm,b=1.3904nm,c=2.0235nm,α=97.33°,β=98.66°,γ=99.05° for 1;a=1.3944nm,b=2.0880nm,c=2.4455nm,α=92.99°,β=95.48°,γ=96.18° for 2;a=2.1892nm,b=1.9171nm,c=1.4546nm,α=94.76°,β=95.09°,γ=94.12° for 3 respectively.
文摘In this study,a number of amino acid schiff bases from vanillin and amino acid have been synthesized under microwave irradiation coupled with solvent-free condition,which proves to be simple and efficient.The structure of the prepared compounds are characterized by elemental analysis,IR,1H NMR and electronic spectra.
文摘The activity on O-2 of ligands from ovanillin and amino acid and their complexes were studied in this paper.Results showed that ligands and their complexes may inhibit the formation of O-2.Zn(Ⅱ)complexes display remarkable activity of inhibiting the formation of O-2.
