Hydrothermal synthesis, structure and variable temperature magnetic performance of polyferric sulfate with µ 3-O2- and µ 3-OH--centered Trinuclear Ferric(III)

Abstract

A novel inorganic coordination polymers crystal is grown from ferric sulfate solution under hydrothermal condition in the presence of adipic acid. The single crystal structure analysis shows that 0.5[Fe6(μ3-O2-)2(μ3-OH-)2(SO4)6].2H2O 1 is composed of µ 3-O2- and µ 3-OH--centered Trinuclear Ferric(III) secondary building units (SUBs) to form two dimensional network, and the lattice parameters are a = 18.223(13) Å, b = 7.670(5) Å, 9.932(7) Å, α = β= γ = 90°, orthorhombic crystal system, Cmc21 space group, V = 1388.3(17) Å3. Squid-VSM magnetic measurement system is used for characterizing the variable temperature magnetic properties measurement of reaction products, and the result indicates that the magnetic susceptibility is obvious reduced with the increasing of test temperature. Noticeably, the higher magnetic susceptibility is acquired at about 0 K. Consequently, the products can be used as a good candidate for magnetic memory materials.