New insights into the thermal stability of Mn12 clusters: The case of complex [Mn12O12(O2CC
CH)16(H2O)4]·3H2O and its thermolysis derived [Mn3(O2CC
CH)6(H2O)4]·2H2O complex†
Abstract
Two novel Mn12 derivatives [Mn12O12(O2CCCH)16(H2O)4]·3H2O (1) and [Mn12O12(O2CC
CC6H5)16(H2O)4]·3H2O (2) have been prepared and characterized. Magnetic measurements confirm that both function as single-molecule magnets (SMM), showing frequency-dependent out-of-phase AC susceptibility signals and magnetization hysteresis curves. Thermal stability studies of both complexes were first conducted in the solid state. While complex 1 undergoes a sudden exothermal
CH)6(H2O)4]·2H2O (3), which corresponds to an extended sheet-like structure that crystallizes in the monoclinic space group P21/n; a = 9.2800(2) Å, b = 9.4132(2) Å, c = 14.9675(3) Å, β = 99.630(1)°, and Z = 2. Finally, the magnetic properties of complex 3 have been studied on an oriented single crystal over two different orientations of the reciprocal vector versus the external field.