A series of novel quaternary mixed anion complexes of lanthanide containing 1,10 phenanthroline (phen) and chloroacetate ligands were synthesized from the water/ethanol solution with slightly acidic solution and char...A series of novel quaternary mixed anion complexes of lanthanide containing 1,10 phenanthroline (phen) and chloroacetate ligands were synthesized from the water/ethanol solution with slightly acidic solution and characterized by elemental analysis, IR, UV and thermal analysis. The EPR and fluorescence properties also were studied.展开更多
The asymmetric Darzen's condensation of aldehydes with a-chloroacetates of somenaturally occurring or synthetic chiral alcohols was described. The de% of products fell over therange of 4. 78% to 99%.
The title complex, Cu 2(O 2CCH 2Cl) 4 OC(NH 2)CH 3 2, crystallizes in space group P2 1/a with a=7.616(4), b=18.665(5), c=7.949(5) , β=106.29(5)°. V=1084(1) 3, Z=2, M r=619.19, D c =1.896 g/...The title complex, Cu 2(O 2CCH 2Cl) 4 OC(NH 2)CH 3 2, crystallizes in space group P2 1/a with a=7.616(4), b=18.665(5), c=7.949(5) , β=106.29(5)°. V=1084(1) 3, Z=2, M r=619.19, D c =1.896 g/cm 3; μ =25.05 cm -1 and F(000)=620.00, R =0.045 and R w =0.054 for 1807 observable reflections. X ray crystal structure analysis revealed that two Cu atoms are bridged by four chloroacetate groups, and the acetamine ligands are bonded by O(carboxide) to the terminal Cu atoms of each dimeric unit. The coordination geometry of Cu atom is a distorted octahedral configuration. The distance between the two Cu atoms is 2.648(1) .展开更多
Anodic dissolution behaviour of Ni in mono-, di- and trichloroacetic acids has been investigated by measuring current densities of Ni electrode (versus SCE) at different potentials. Effects of acid concentration, pH, ...Anodic dissolution behaviour of Ni in mono-, di- and trichloroacetic acids has been investigated by measuring current densities of Ni electrode (versus SCE) at different potentials. Effects of acid concentration, pH, scan rate and additive inhibitor on the potential were studied and they revealed that there is a considerable shift of potential. Potentiodynamic polarization measurements show that the corrosion rate of Ni in chloroacetic acid solutions increases by increasing the previous factors. However, by adding inhibitor, it decreases.展开更多
文摘A series of novel quaternary mixed anion complexes of lanthanide containing 1,10 phenanthroline (phen) and chloroacetate ligands were synthesized from the water/ethanol solution with slightly acidic solution and characterized by elemental analysis, IR, UV and thermal analysis. The EPR and fluorescence properties also were studied.
文摘The asymmetric Darzen's condensation of aldehydes with a-chloroacetates of somenaturally occurring or synthetic chiral alcohols was described. The de% of products fell over therange of 4. 78% to 99%.
文摘The title complex, Cu 2(O 2CCH 2Cl) 4 OC(NH 2)CH 3 2, crystallizes in space group P2 1/a with a=7.616(4), b=18.665(5), c=7.949(5) , β=106.29(5)°. V=1084(1) 3, Z=2, M r=619.19, D c =1.896 g/cm 3; μ =25.05 cm -1 and F(000)=620.00, R =0.045 and R w =0.054 for 1807 observable reflections. X ray crystal structure analysis revealed that two Cu atoms are bridged by four chloroacetate groups, and the acetamine ligands are bonded by O(carboxide) to the terminal Cu atoms of each dimeric unit. The coordination geometry of Cu atom is a distorted octahedral configuration. The distance between the two Cu atoms is 2.648(1) .
文摘Anodic dissolution behaviour of Ni in mono-, di- and trichloroacetic acids has been investigated by measuring current densities of Ni electrode (versus SCE) at different potentials. Effects of acid concentration, pH, scan rate and additive inhibitor on the potential were studied and they revealed that there is a considerable shift of potential. Potentiodynamic polarization measurements show that the corrosion rate of Ni in chloroacetic acid solutions increases by increasing the previous factors. However, by adding inhibitor, it decreases.
