Abstract
The structural alteration in investigated tetranuclear NiII clusters induced only by solvent exchange resulted in significant changes in their physical and chemical properties.
Highlights
Paper non-coordinated solvent molecules.[28]
All these findings inspired us to study the dynamics of exchange of coordinated and noncoordinated solvents in a new family of no significant geometrical change in the (NiII) cubane-like clusters, comprising [Ni4L4(CH3OH)4]Áxsolv, [Ni4L4(CH3OH)4] and [Ni4L4] compounds
It was noticed that the synthesis path is not sensitive to the molar ratio of the precursors
Summary
Paper non-coordinated solvent molecules.[28]. Nowadays, solvent effects are becoming increasingly interesting. In the latest investigation of [Ni4L4(solv)4] type of complexes it was shown that at ambient temperature, these compounds show reversible exchange of the coordinated solvent molecules (MeOH vs H2O), causing the spin to switch the ground state from S = 4 to S = 0.29 Even more interesting is the recent research of desolvation of SMM materials (Mn12,30 FeI4II,[31] metal–organic frameworks32) reporting a serious effect of lattice (non-coordinated) solvents and experimental conditions on magnetic properties. All these findings inspired us to study the dynamics of exchange of coordinated and noncoordinated solvents in a new family of NiII cubane-like clusters, comprising [Ni4L4(CH3OH)4]Áxsolv, [Ni4L4(CH3OH)4] and [Ni4L4] compounds. The effect of the type and the amount of the solvent in the structure on the magnetic properties was examined, and second, magnetic properties were used to facilitate crystal structure determination
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