Synthesis, characterization and catalytic activity toward dye decolorization by manganese (II) mononuclear complexes
摘要:
Manganese(II) perchlorate reacts with L1=N,N,N'-tris(2-methylpyridyl)-N'-hydroxyethyl-ethylenodiamine and L2=N-(2-hydroxybenzyl)-N,N'-bis(2-methylpyridyl)-N'-hydroxyethyl-ethylenodiamine in ethanol to form the corresponding complexes [MnL1(H2O)](ClO4)(2) and [MnL2]ClO4. Both complexes crystallize in the monoclinic system and space group P 2(1)/n. In [MnL1(H2O)](2+) and [MnL2](+) the manganese(II) ion is heptacoordinated and hexacoordinated, respectively. FTIR, elemental analysis and conductance measurements were all in accordance with the molecular structures of [MnL1(H2O)](ClO4)(2) and [MnL2]ClO4. The ability of [MnL1(H2O)](ClO4)(2) and [MnL2]ClO4 to catalyze the oxidation of the dyes methyl orange and reactive orange 16 was studied in aqueous alkaline solution (carbonate/bicarbonate buffer). Both complexes were active catalysts promoting significant enhancement of dye solution decolorization in comparison to control reactions. (C) 2013 Elsevier B.V. All rights reserved.
Synthesis, characterization and catalytic activity toward dye decolorization by manganese (II) mononuclear complexes
摘要:
Manganese(II) perchlorate reacts with L1=N,N,N'-tris(2-methylpyridyl)-N'-hydroxyethyl-ethylenodiamine and L2=N-(2-hydroxybenzyl)-N,N'-bis(2-methylpyridyl)-N'-hydroxyethyl-ethylenodiamine in ethanol to form the corresponding complexes [MnL1(H2O)](ClO4)(2) and [MnL2]ClO4. Both complexes crystallize in the monoclinic system and space group P 2(1)/n. In [MnL1(H2O)](2+) and [MnL2](+) the manganese(II) ion is heptacoordinated and hexacoordinated, respectively. FTIR, elemental analysis and conductance measurements were all in accordance with the molecular structures of [MnL1(H2O)](ClO4)(2) and [MnL2]ClO4. The ability of [MnL1(H2O)](ClO4)(2) and [MnL2]ClO4 to catalyze the oxidation of the dyes methyl orange and reactive orange 16 was studied in aqueous alkaline solution (carbonate/bicarbonate buffer). Both complexes were active catalysts promoting significant enhancement of dye solution decolorization in comparison to control reactions. (C) 2013 Elsevier B.V. All rights reserved.