Bis[μ-chloro-dichlorobis(2,6-bis(4-amino-2-thiabutyl)-4-methylphenolato-(N,N1,S,S1,-μ-O))dicopper(II)-μ-Cl]; a dimer of dinuclear copper(II) complexes containing a novel pentadentate ligand
1992; Elsevier BV; Volume: 192; Issue: 2 Linguagem: Inglês
10.1016/s0020-1693(00)80762-8
ISSN1873-3255
AutoresJennifer C. Wilson, P.D. Verweij, W.L. Driessen, J. Reedijk,
Tópico(s)Metal-Catalyzed Oxygenation Mechanisms
ResumoThe di-hydrochloride salt of the N2S2O ligand, 2,6-bis(4-amino-2-thiabutyl)-4-methylphenol, HL(HCl)2 reacts with CuCl2(H2O)2 in methanol solution after treatment with KOH, to yield a dinuclear species of stoichiometry [Cu2LCl3]. Two dinuclear units of this complex are linked via long CuCl and ClHN interactions (CuCl 3.270(3) Å; ClN 3.296(6), 3.526(6) Å) to yield a dimer in the solid state. Further hydrogen-bond interactions link these dimeric units into an infinite-chain structure along the z axis. The compound crystallizes in the monoclinic space group P21/c with a = 11.657(3), b = 16.647(5), c = 8.845(2) Å and β = 105.38(2)°. The dinuclear unit contains a trigonal-bipyramidal and a square-pyramidal copper atom. The copper atoms are asymmetrically bridged by a phenolate oxygen and a chloride ion, with a CuCu distance of 3.311(1) Å. Each copper atom has an additional chloride ligand. The compound was characterized by EPR, ligand field spectroscopy and magnetic measurements over the temperature range 6.3–290 K. The magnetic measurements indicate that there is a weak ferromagnetic interaction between the copper centers.
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