102424-95-3Relevant academic research and scientific papers
BINUCLEAR COMPLEXES. II. SYNTHESIS, CHARACTERIZATION AND MODEL OXIDASE ACTIVITY OF BINUCLEAR COPPER(II) COMPLEXES DERIVED FROM α,α'-DIAMINO-m-XYLENE AND THEIR MONONUCLEAR ANALOGUES DERIVED FROM DIPROPYLENETRIAMINE AND 5-BENZYLDIPROPYLENETRIAMINE
Casella, Luigi,Gullotti, Michele,Pessina, Corrado,Pintar, Alessandro
, p. 41 - 50 (2007/10/02)
A series of binuclear copper(II) complexes with the ligands derived from the condensation of 1,3-bisbenzene with salicylaldehyde, 2-pyrrolecarboxaldehyde, 2-pyridinecarboxaldehyde, or 1-phenyl-3-formyl-2(1H)-pyridinethione, and the corresponding mononuclear analogues derived from either dipropylenetriamine or 5-benzyldipropylenetriamine have been synthesized and characterized by spectroscopic measurements.The metal centres of these complexes are five-coordinate and span a range of stereochemistries comprised between square-pyramidal and distorted trigonal bipyramidal.The catalytic activity of the complexes for the air oxidation of 3,5-di-t-butylcatechol and 4-methylcatechol has been also investigated.In general, the complexes containing pyrrolic residues exhibit much higher reactivity than the other complexes, but this reactivity is also influenced by steric factors.Thus, while the mononuclear complex derived from dipropylenetriamine is most reactive for the oxidation of 3,5-di-t-butylcatechol, the binuclear complex exhibits the highest activity for the oxidation of the less sterically hindered 4-methylcatechol.The higher reactivity of the binuclear complexes $vs. their mononuclear analogues for the oxidation of the latter substrate is confirmed by the behaviour of the other complexes.
