The complex containing ferroceneyl, Cd(dppf)I2(dppf=1,1 bis(diphenylphosphino) ferrocene), was synthesized and characterized by IR, Uv vis DRIS spectrum and X ray diffraction. The crystal belongs to monoclinic, space ...The complex containing ferroceneyl, Cd(dppf)I2(dppf=1,1 bis(diphenylphosphino) ferrocene), was synthesized and characterized by IR, Uv vis DRIS spectrum and X ray diffraction. The crystal belongs to monoclinic, space group C2/c, a=37.439(3)?, b=10.2472(6)?, c=18.719(1)?, β=110.4715(16)°, V=6727.8(8)?3, Z=8, Dc=1.818g·cm-3, F(000)=3536, μ=3.015mm-1, R=0.0308, wR=0.0692. dppf coordinates to Cd? as bidentate ligand, and the coordination environment of Cd? is a distorted tetrahedron. The electronic structures of Cd(dppf)I2 and Cd(dppf)Br2 are discussed by quantum chemistry calculation.展开更多
The effects of various factors,the reaction time,temperature,particle size,initial Cd2+ concentration,pH and different anion,on the adsorption behavior of Cd2+ on chitosan were investigated.The results sho...The effects of various factors,the reaction time,temperature,particle size,initial Cd2+ concentration,pH and different anion,on the adsorption behavior of Cd2+ on chitosan were investigated.The results showed that optimum conditions of adsorption by chitosan were:the counteranion species in Cd2+ solution was SO24;pH in Cd2+ solution was 40;the higher temperature and the longer reaction time was good for adsorption.展开更多
文摘The complex containing ferroceneyl, Cd(dppf)I2(dppf=1,1 bis(diphenylphosphino) ferrocene), was synthesized and characterized by IR, Uv vis DRIS spectrum and X ray diffraction. The crystal belongs to monoclinic, space group C2/c, a=37.439(3)?, b=10.2472(6)?, c=18.719(1)?, β=110.4715(16)°, V=6727.8(8)?3, Z=8, Dc=1.818g·cm-3, F(000)=3536, μ=3.015mm-1, R=0.0308, wR=0.0692. dppf coordinates to Cd? as bidentate ligand, and the coordination environment of Cd? is a distorted tetrahedron. The electronic structures of Cd(dppf)I2 and Cd(dppf)Br2 are discussed by quantum chemistry calculation.
文摘The effects of various factors,the reaction time,temperature,particle size,initial Cd2+ concentration,pH and different anion,on the adsorption behavior of Cd2+ on chitosan were investigated.The results showed that optimum conditions of adsorption by chitosan were:the counteranion species in Cd2+ solution was SO24;pH in Cd2+ solution was 40;the higher temperature and the longer reaction time was good for adsorption.
