A new spectrophotometric method for the determination of trace manganese has been studied,based on the discoloration reaction between KIO4 and Morin in NaOH solution.The maximum absorption wavelength is at 415nm.The l...A new spectrophotometric method for the determination of trace manganese has been studied,based on the discoloration reaction between KIO4 and Morin in NaOH solution.The maximum absorption wavelength is at 415nm.The linear range is 0.0016μg/mL^0.0064μg/mL,and detection limit is 1.0×10-3μg /mL.There are no interference from the most common ions.The method has been used to determine trace Manganese in tea samples with satisfactory results.展开更多
The title complex [Mg(H2O)6]·(L)·(H2O) [L=2-formyl-benzenesulfonate-hydrazine] was synthesized by the reaction of magnesium chloride hexahydrate with 2-formyl-benzenesulfonic acid sodium-hydrazine in the CH3...The title complex [Mg(H2O)6]·(L)·(H2O) [L=2-formyl-benzenesulfonate-hydrazine] was synthesized by the reaction of magnesium chloride hexahydrate with 2-formyl-benzenesulfonic acid sodium-hydrazine in the CH3CH2OH/H2O.It was characterized by elemental analysis,IR and X-ray single crystal structure analysis.The crystal of the title complex [Mg(H2O)6]·(C14H12N2O7S2)·(H2O) belongs to triclinic,space group P1 with a=0.781 09(12) nm,b=0.781 27(13) nm,c=0.995 68(19) nm,α=102.054(2)°,β=92.331 0(10)°,γ=105.500(2)°,V=0.569 59(17) nm3,Z=1,Dc=1.559 Mg·m-3,μ=0.334 mm-1,F(000)=280,and final R1=0.033 9,wR2=0.091 6.The complex comprises a six-coordinated magnesium(Ⅱ) center,with a O6 distorted octahedron coordination environment.The molecules are connected by hydrogen bonds to form two dimensional network structures.展开更多
文摘A new spectrophotometric method for the determination of trace manganese has been studied,based on the discoloration reaction between KIO4 and Morin in NaOH solution.The maximum absorption wavelength is at 415nm.The linear range is 0.0016μg/mL^0.0064μg/mL,and detection limit is 1.0×10-3μg /mL.There are no interference from the most common ions.The method has been used to determine trace Manganese in tea samples with satisfactory results.
文摘The title complex [Mg(H2O)6]·(L)·(H2O) [L=2-formyl-benzenesulfonate-hydrazine] was synthesized by the reaction of magnesium chloride hexahydrate with 2-formyl-benzenesulfonic acid sodium-hydrazine in the CH3CH2OH/H2O.It was characterized by elemental analysis,IR and X-ray single crystal structure analysis.The crystal of the title complex [Mg(H2O)6]·(C14H12N2O7S2)·(H2O) belongs to triclinic,space group P1 with a=0.781 09(12) nm,b=0.781 27(13) nm,c=0.995 68(19) nm,α=102.054(2)°,β=92.331 0(10)°,γ=105.500(2)°,V=0.569 59(17) nm3,Z=1,Dc=1.559 Mg·m-3,μ=0.334 mm-1,F(000)=280,and final R1=0.033 9,wR2=0.091 6.The complex comprises a six-coordinated magnesium(Ⅱ) center,with a O6 distorted octahedron coordination environment.The molecules are connected by hydrogen bonds to form two dimensional network structures.
