Polyoxometalate salts of cationic nitronyl nitroxide free radicals

The cationic nitronyl nitroxide free radical of the N-methylpyridinium type p-MepyNN+ has been combined with [Mo8O26]4− and Keggin [SiW12O40]4− polyanions to afford salts (p-MepyNN)4[Mo8O26]·DMSO (DMSO = dimethylsulfoxide) (1) and (p-MepyNN)4[SiW12O40]·6DMF (DMF = dimethylformamide) (2). Herein, their structural and magnetic properties are described.

Figure optionsDownload as PowerPoint slide