Journal of the Chemical Society, Dalton Transactions p. 1943 - 1948 (1988)
Update date:2022-09-26
Topics:
Matsumoto, Naohide
Yamashita, Sadatoshi
Ohyoshi, Akira
Kohata, Susumu
Okawa, Hisashi
The mononuclear copper(II) complex with the unsymmetrical quadridentate ligand <(4-imidazolyl)methyliminopropylsalicylideneiminato>copper(II)tetraphenylborate, a = 20.822(4), b = 14.132(3), c = 10.698(2) Angstroem, β = 98.63(2) degree, and Z = 4.The copper atom assumes a square-planar co-ordination environment with a slight distortion toward tetrahedral, where the dihedral angle between the CuN2 and CuON planes representing the degree of tetrahedral distortion is 10.9 degree.The polynuclear complex crystallizes in the triclinic space group P1 with a = 15.421(5), b = 16.594(4), c = 10.537(1) Angstroem, α = 115.08(1), β = 103.21(2), γ = 57.48(2) degree, and Z = 2.The complex has a unique helicoid linear-chain structure along the c axis formed by the imidazolate bridges, where the copper atom assumes a square-based pyramidal co-ordination environment with the imidazolate nitrogen of the neighbouring copper complex occupying the axial position.The magnetic properties of the complex are well represented by the Ising model on the basis of a linear-chain structure.
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