Abstract
On interacting FeCl 3 with Cp 2ReH in THF at room temperature while single crystals of the complex (2FeCl 2·3THF) 2 (I) were obtained. The structure of (I) was established by total X-ray analysis. Crystals of the complex are (space group P 1 ) with the unit cell parameters: a = 10.027(4), b = 10.983(6), c = 10.589(6) Å; α = 116.86(4)°, β = 98.23(4)°, γ = 68.09(4)°, Z = 1, V = 964.7 Å 3. Four Fe(II) atoms in the molecule are bonded through the μ 3-bridging Cl atoms (Fe-Cl av = 2.46 Å), with the coordination sphere of each metal atom being supplemented by the bonding with two or one THF molecule (FeO av = 2.12 Å). All the Fe⋯Fe distances in the molecule were non-bonding. The unique magnetic properties of (I) are shown to be specified by the co-existence of ferro- and antiferromagnetic exchange interactions.
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