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Stabilization of a copper peroxido complex with a new binucleating ligand

2010; Taylor & Francis; Volume: 63; Issue: 14-16 Linguagem: Inglês

10.1080/00958972.2010.490876

1029-0389

Christian Würtele, Frank W. Heinemann, Siegfried Schindler,

Magnetism in coordination complexes

Abstract The ligand L1 (N1,N3-di[2-di(2-pyridylmethyl)aminoethyl]N1,N3-dimethyl-1,3-propandiamine) bridges two tripodal units of the amine ligand Me2uns-penp (N1,N1-dimethyl-N2,N2-di(2-pyridylmethyl)-1,2-ethandiamine) with a propyl group. The ligand L1, the dinuclear copper(I) complex [Cu2(L1)](BPh4)2 and the dinuclear copper(II) complexes [Cu2Cl2(L1)](ClO4)2, and Cu2Cl2(L1)]Cl2 have been synthesized and structurally characterized. The copper(I) complex reacts reversibly with dioxygen at low temperatures and forms a peroxido complex that is thermally more stable than the related peroxido complex formed from two mononuclear copper(I) complexes of the ligand Me2uns-penp. Keywords: CopperX-ray crystallographyPeroxido complexesLow-temperature stopped-flow studiesTripodal tetradentate ligand