Ferromagnetic Dinuclear Nickel(II) Complex with a Schiff-base Having a Di-μ-phenolato-μ-methanol-bridged Core

Abstract

The di-μ-phenolato-μ-methanol-bridged dinuclear nickel(II) complex with N,N′-disalicylidene-2,2′-(ethylenedioxy)bis(ethylamine) (H₂dee), [Ni₂(dee)₂(μ-CH₃OH)]·2CH₃OH, was synthesized. The crystal structure was determined by the single-crystal X-ray diffraction method at 90 K. The complex crystallizes in the monoclinic space group Cc with a = 18.157(2), b = 13.1691(17), c = 18.880(3)Å, β = 110.483(2)°, V = 4229.0(10)ų, D_calcd = 1.449 g/cm³, Z = 4. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0532 and 0.1455, respectively, for all 7392 independent reflections. The temperature dependence of the magnetic susceptibility showed a ferromagnetic interaction between the two nickel(II) ions (g = 2.23, J = 6.50 cm⁻¹, D = 8.96 cm⁻¹, and Nα = 697 × 10⁻⁶ cm³ mol⁻¹ or g = 2.21, J = 7.27 cm⁻¹, D = –6.88 cm⁻¹, and Nα = 765 × 10⁻⁶ cm³ mol⁻¹).