Patent ID: 6780947
Filing Date: 2004-08-24
Classification: C07D,C07F,C08F

Abstract:
A complex of a metal M selected from transition metals and lanthanides, having the following formula (VI):(IAP)M(X)nâ€ƒâ€ƒ(VI) wherein:M is a metal selected from transition metals, i.e. metals of groups 3 to 12 of the periodic table, and from lanthanides, which is in an oxidation state â€œsâ€  positive and different from zero; each X is independently a group of an anionic nature bound to the metal as anion in an ionic couple or with a covalent bond of the â€œ&sgr;â€  type; â€œnâ€  expresses the number of X groups sufficient for neutralizing the formal â€œ+sâ€  charge of the metal M, and is equal to â€œsâ€  if all the X groups are monovalent; and (IAP) represents a neutral organic ligand; characterized in that said ligand (IAP) consists of a mono-imine of 2,6-diacylpyridine having the following general formula (V): wherein:Râ€² and Râ€³ are independently hydrogen or a hydrocarbon radical, preferably aliphatic, having from 1 to 10 carbon atoms, optionally halogenated, more preferably methyl; each Ri (i=1-8) is independently hydrogen, halogen or C1-C10 alkyl, or C6-C15 aryl, optionally halogenated, on the condition that at least one of the R1 or R5 groups, preferably both, is a hydrocarbon radical.