Author_Institution :
Sch. of Environ. Sci. & Safety Eng., Tianjin Univ. of Technol., Tianjin, China
Abstract :
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
A new Ni(II) Complex with N, N, N´, N´-tetrakis( benzimidazol-2-yl-methyl )-1, 2-ethanediamine (EDTB) was synthesized and was characterized by using X-ray diffraction method. The crystallographic parameters are as follow: C38H46N10O11SCl2Ni, Mr=980.52, triclinic, a=10.568(4)Å, b=12.078(5) Å, c = 18.868(7) Å, α = 73.700(7)°, β= 77.081(7)°, γ= 84.500(7)°, V=2251.6(15) Å3, Dc=1.446 Mg/m3, Z=2, F(000)=1020, μ=0.664 mm-1, space group is P1̅ .The distortion have taken place between the structure of free ligand EDTB and that in the nickel complex, which caused the complex to be unstable in crystal form. But the holding of aromatic ring packing and hydrogen bonds in the crystal kept the stability of crystal. Based on the crystal data, the quantum chemistry calculation was performed. Both the crystal structure and the computational results show that the nickel complex presents certain biological activity of eliminating superoxide anion radical (O2-·), and this conclusion is proved by the activity data pl50=4.26 of the complex C38H46N10O11SCl2Ni, so it can be called the model complex of nickel-containing superoxide dismutase(MSOD) and has a certain antioxygenic property. On the other hand, nickel is a harmful metal which occurs widely in the wast- water and contaminated soils, and can be transferred through the food chains. The addition of EDTB and the formation of the above complex just can play a role of chemical immobilization of nickel in environmental medium such as water and soils.
Keywords :
X-ray diffraction; crystal structure; geochemistry; hydrogen bonds; materials preparation; nickel compounds; organic compounds; soil; space groups; wastewater; 2-ethanediamine; C38H46N10O11SCl2Ni; N,N,N´,N´-tetrakis( benzimidazol-2-yl-methyl )-1; NiSOD model complex; X-ray diffraction method; activity data; antioxygenic property; aromatic ring packing; biological activity; chemical immobilization; contaminated soils; crystal data; crystal structure; crystallographic parameters; environmental medium; food chains; free ligand EDTB; heavy metal removal; hydrogen bonds; nickel complex; nickel-containing superoxide dismutase; quantum chemistry calculation; soils; space group; superoxide anion radical; wastewater; Biology; Chemistry; Crystals; Nickel; Orbits; Soil;
