Abstract
Magneto-structural correlations in stable organic biradicals have been studied on example of weakly exchange coupled models with nitronyl nitroxide and imino nitroxide spin-carrying entities.
Highlights
Organic magnetic materials possess properties not shown by traditional inorganic compounds.[5,6,7,8] Plasticity, flexibility and solubility in common organic solvents define the ease of various device fabrication
In the current work we report the synthesis of a series of new nitroxide biradicals (Fig. 1), their characterization, including X-ray structural analysis and their magnetic properties, which are discussed with respect to the quantum chemical calculations based on the DFT approach
Compound 8 was involved in Pd-catalyzed Sonogashira–Hagihara coupling with trimethylsilyl acetylene (TMSA) giving rise to derivative 9
Summary
Organic magnetic materials possess properties not shown by traditional inorganic compounds.[5,6,7,8] Plasticity, flexibility and solubility in common organic solvents define the ease of various device fabrication. Advanced chemistry techniques permit small structural modifications in already achieved model systems in order to fine-tune their physical properties. Organic-based magnetic materials offer a number of convenient tools extremely helpful in controlling the intra- and inter-dimer exchange coupling, such as p–p interactions, hydrogen bonding, etc. Nitronyl nitroxide (NN) radicals are well-known for their stability and bidentate character.[9,10] NN radicals are among the most popular spin carriers used to construct molecule-based magnets.[10]
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