Synthesis of nitronyl- and imino-nitroxide-triradicals interconnected by phenyl ethynyl spacer
作者:Laure Catala、Philippe Turek、Jacques Le Moigne、André De Cian、Nathalie Kyritsakas
DOI:10.1016/s0040-4039(99)02218-2
日期:2000.2
The design and synthesis, as well as solid state and ESR characterisation of three new triradicals based on phenyl ethynyl backbone bearing nitronyl-nitroxide and imino-nitroxide groups, are reported. The synthesis of these compounds was based on palladium-coupling reactions between alkynyl and bromo derivatives. An ESR study showed magnetic interactions between the radicals through the phenyl ethynyl-coupling
Towards a Better Understanding of Magnetic Interactions withinm-Phenylene ?-Nitronyl Nitroxide and Imino Nitroxide Based Radicals, Part III: Magnetic Exchange in a Series of Triradicals and Tetraradicals Based on the Phenyl Acetylene and Biphenyl Coupling Units
作者:Laure Catala、Jacques Le Moigne、Nathalie Gruber、Juan J. Novoa、Pierre Rabu、Elie Belorizky、Philippe Turek
DOI:10.1002/chem.200400552
日期:2005.4.8
coupling within series of biradicals. This knowledge was subsequently exploited for the analysis of the magnetic interactions in their crystals. We report here the studies of series of triradicals incorporating alpha-nitronyl nitroxides (NN) or alpha-imino nitroxides (IN) as terminal radical fragments connected through a m-phenylene coupling unit in one case and a phenyl acetylene unit in other case.