Aurel Pui, Nicoleta Cornei, REMY Ricoux, JEAN-PIERRE MAHY<br>Synthesis Characterization and Catalytic Activity of Some New Manganese (II) Compounds with Tetra-chloro R-bis(salicylaldehyde) Ethylenediamine and R- bis(salicylaldehyde) Phenylenediamine Ligands (R= H, CH3, CH2-CH3)

Aurel Pui, Nicoleta Cornei, REMY Ricoux, JEAN-PIERRE MAHY
Synthesis Characterization and Catalytic Activity of Some New Manganese (II) Compounds with Tetra-chloro R-bis(salicylaldehyde) Ethylenediamine and R- bis(salicylaldehyde) Phenylenediamine Ligands (R= H, CH3, CH2-CH3)

Abstract:

The Schiff bases with two chlorine atoms grafted on each salicyl-aldehyde or salicyl-ketone molecules and with -H, -CH3 or CH3-CH2- in the azomethynic-position were synthesized as ligands. The chain between donors N-N atoms is either ethylene or -o-phenylene. The manganese (II) ion forms with such ligands coordinative compounds. The free ligands and manganese compounds were characterized by elemental analysis, UV-VIS, FT IR, NMR spectroscopy and cyclic voltammetry. The semi waves potentials are influenced of nature of substituents (Cl and R) grafted on the molecule of the ligands. These complexes are able to oxidize the 2,6-di-tert-butyl-phenol (DtBuP), in presence of molecular oxygen in DMF solution, with formation of the tetra-tert-butyl-diphenoquinone (TtBuDQ). Keywords: manganese(II) complexes; Schiff bases, catalytic activity

Issue: 2010, Volume 61, Issue 6

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Aurel Pui, Nicoleta Cornei, REMY Ricoux, JEAN-PIERRE MAHYSynthesis Characterization and Catalytic Activity of Some New Manganese (II) Compounds with Tetra-chloro R-bis(salicylaldehyde) Ethylenediamine and R- bis(salicylaldehyde) Phenylenediamine Ligands (R= H, CH3, CH2-CH3)

Aurel Pui, Nicoleta Cornei, REMY Ricoux, JEAN-PIERRE MAHY
Synthesis Characterization and Catalytic Activity of Some New Manganese (II) Compounds with Tetra-chloro R-bis(salicylaldehyde) Ethylenediamine and R- bis(salicylaldehyde) Phenylenediamine Ligands (R= H, CH3, CH2-CH3)