STRUCTURE AND PROPERTIES OF M(dmit) 2 SALTS WITH Me 3 N + -TEMPO OR TTF-(HO)TEMPO

Abstract

Aiming at obtaining a new magnetic conductor with coupled conducting and magnetic properties, magnetic counter cations based on the TTF donor and the ammonium ion substituted with TEMPO radical are investigated in order to be associated with M(dmit) 2 (M ¼ Ni, Pd) molecules.

Conducting Organic Radical Cation Salts with Organic and Organometallic Anions

“…The functional group 2,2,6,6-tetramethylpiperidin- N -oxyl (TEMPO) is a commonly used stable radical in the search for purely organic magnets as well as a paramagnetic marker in biological systems. − Derivatives of the radical have also been employed as electron donors in a number of charge-transfer salts. − In a series of papers Akutsu and co-workers described anions derived from TEMPO with sulfonate groups, where the anionic substituent is connected via a suitable spacer at the 4-position of the piperidine ring (para to the nitroxyl group). Anions containing the amido (−NH−), , oxo (−O−), and acetylamido (−NHC(O)CH 2 −) 46 spacers have been reported, and the ET salt of the last derivative is known, i.e., (ET) 3 (TEMPO−NHCOCH 2 SO 3 ) 2 (H 2 O) 6 …”