Abstract
Abstract A strategy for the design of molecule-based magnets consists of assembling transition-metal ions in two-dimensional (2D) or three-dimensional (3D) networks in order to maximize the interactions between the magnetic centers. While increasing the dimensionality of the compounds, an increase in Tc, the critical temperature of spontaneous magnetization should, in principal, be favoured. We are currently studying materials that are formed by the interaction of transition-metal ions with the oxalate ligand, C2O4 2-, and will present a straightforward concept for building up achiral 2D and chiral 3D homo- and bimetallic networks. Whereas a variety of metal ions can be incorporated, a correlation of the magnetic behavior and the relationship to the special topology of e.g. the chiral, cubic 3-connected 10-gon net (10,3) is not yet fully understood.
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