Abstract
A new route to {Cu 2(κ 1-pyNH 2) 2(μ-OMe) 2Cl 2} n (pyNH 2 = 2-aminopyridine) ( 3) is reported. Structural characterisation reveals the presence of methoxide and chloride bridging units within the complex which support close copper–copper bonding interactions resulting in interesting magnetic properties. The variable-temperature (4–300 K) magnetic susceptibility data of the complex were interpreted with the dimer law using the molecular field approximation. The results obtained indicate a weak antiferromagnetic ( zJ′ = −15 cm −1) inter-chain interaction through the chloro-bridge. A relatively strong antiferromagnetic interaction, transmitted through the oxygen-bridge, with an exchange coupling of 2 J = −305 cm −1, which dominates the magnetic properties of the title complex.
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