C. Livage, C. Egger, G. Férey
May 20, 1999
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Journal
Chemistry of Materials
Abstract
A new layered cobalt succinate, Co4(OH)2(H2O)2(C4H4O4)3·2H2O, was prepared under hydrothermal conditions at 180 °C from a 1:1.5:4:120 mixture of Co(II) chloride hexahydrate, succinic acid, potassium hydroxide, and water. The structure was solved by single-crystal X-ray diffraction: P1, a = 10.181(2), b = 10.668(2), c = 12.857(2) A, α = 112.97(3)°, β = 91.24(3)°, γ = 117.96(3)°, V = 1099.1(4) A3, Z = 2, 5511 F2 values with I = 2σ(I), R1 = 0.045 and wR2 = 0.114. The title compound presents a structure constituted by the stacking along [100] of metal oxide layers in which 14-membered ring windows appear. Succinate anions linked the cobalt atoms within each layer. From magnetization measurements, this compound is ferrimagnetic below 10 K.