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- W2065476265 abstract "Dimeric complexes, bis[dihalo(2-dimethylaminomethyl-3-hydroxypyridine)-copper(II)], [Cu(dmamhp)X2]2, were prepared from the reaction of copper(II) halide (Cl, Br) with 2-dimethylaminomethyl-3-hydroxypyridine (dmamhp) in methanol, and their single crystal structures were determined. The chloro compound was crystallized as green needles in space group P1¯ of the triclinic system with Z = 1 and unit cell dimensions a = 7.3420(12), b = 9.196(3), c = 9.817(2) Å, α = 115.16(3)°, β = 92.433(16)° and γ = 111.59(2)°. The corresponding values for the bromo complex are a = 7.5652(15), b = 9.191(3), c = 9.7926(13) Å, α = 113.912(14)°, β = 92.396(14)° and γ = 111.24(2)°. The chloro compound consists of a dimeric molecule [Cu(dmamhp)Cl2]2, in which copper(II) ions are bridged by chloride ligands. The geometry at the copper is distorted trigonal bipyramidal with the pyridine nitrogen [N9], terminal chloride [Cl1] and the bridging chloride [Cl2i] in the equatorial site; and with the amine nitrogen [N9] and the remaining bridging chloride [Cl2] in the axial site. The dimer units are held through the hydrogen bonding between the hydroxy group in a pyridine ring and the terminal chloride ion. The bromo compound shows a similar structure. The magnetic susceptibility data of both compounds were followed by the Bleaney–Bowers dimer equation with J = −11.17 and −21.11 cm−1 for the chloro and bromo complexes respectively, indicating that there are antiferromagnetic interactions between the copper(II) ions in the solid state." @default.
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- W2065476265 date "2005-01-01" @default.
- W2065476265 modified "2023-10-18" @default.
- W2065476265 title "Structural and magnetic characterization of copper(II) halide complexes with 2-(dimethylaminomethyl)-3-hydroxypyridine" @default.
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- W2065476265 doi "https://doi.org/10.1016/j.poly.2004.12.004" @default.
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