Complex of a transition metal with 2,2 - bipyridine - ligands which, with at least one substituted ammonium alkyl group, to processes for their preparation and their use as redox mediator

摘要

Complex of formula i & br / (see appended drawing in bopi) & br / & & br / in which r1, r2 and r3, which are identical or different, represent a separate linear or branched alkyl radical with 1 to 5 carbon atoms, or together with the nitrogen atom to which they are linked a heterocycle with 5 to 7 carbon atoms; "alk " represents a linear or branched alkylene radical having 1 to 5 carbon atoms; r4 to r8, identical or different, represent hydrogen, hydroxy, alkoxy, aryloxy, amino - primary, secondary or tertiary, or the group - alk - n - (r1 + r2 r3) in which alk ", r1, r2 and r3 have the above meanings; m represents a transition metal such as fe, ru, or bone; x is an anion and n an integer number corresponding to the number of positive charges of the complex.