Record number :
Title of article :
Monometallic and heterobimetallic complexes derived from salen-type ligands
Author/Authors :
Michael Schley، نويسنده , , Peter L?nnecke، نويسنده , , Evamarie Hey-Hawkins، نويسنده ,
Issue Information :
دوفصلنامه با شماره پیاپی سال 2009
Pages :
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Abstract :
Mononuclear and heterodinuclear complexes of the salen-type ligand H2LH2 [H2LH2 = 2,2′-[1,2-dihydroxybenzene-4,5-diylbis(nitrilomethylidine)]bis(3,5-di-tert -butylphenol)] were prepared, whereof [{Mn(CH3OH)2}LH2]Cl, [ML(View the MathML sourceZrCp2∗)] (M = Ni, Cu, CrCl(py); py = pyridine, Cp∗ = pentamethylcyclopentadienyl) were characterized by X-ray analysis. Additionally, cyclic voltammetric investigations were performed to ascertain the influence of the second transition metal complex fragment [View the MathML sourceZrCp2∗]2+ on the metallo salen ligand. Moreover, the complexes were tested in the catalytic epoxidation of styrene. Although the complexes are quite sensitive towards oxidants, monometallic complex [{Mn(CH3OH)2}LH2]Cl exhibited a conversion of 70.6% with styrene oxide selectivity of 88% over 1 h at room temperature.
Keywords :
Heterometallic complexes , Molecular structure , oxidation reactions , Electrochemistry
Journal title :
Journal of Organometallic Chemistry
Link To Document :