Patent ID: 6441210
Filing Date: 2002-08-27
Classification: C07F,C08F,C08G

Abstract:
Metal complex containing one or more silsesquioxane ligands, characterised in that the metal complex has the formulaZy(MAxBq)bâ€ƒâ€ƒ(I), whereinZ is a silsesquioxane according to the formula R7âˆ’lSi7O12YD1+lâ€ƒâ€ƒ(II), M is a metal from groups 3-6 of the Periodic System of the Elements and the lanthanides, A is a monoanionic ligand bound to the metal, B is a &pgr;-bound ligand, y represents the number of silsesquioxane ligands and is 1-10, b represents the number of metal groups and is 1-20, q is 0,1 or 2, x is the number of substituents A bound to the metal; the value of x depends on the metal used and is equal to the valency of the metal minus 1, 2, 3 or 4, R is a substituent bound to Si, wherein the R groups can be the same or different and can for instance be hydrogen or an alkyl, aryl or silyl group, Y is an atom from group 13 or 14 of the Periodic System of the Elements, D is a group, directly bound to Y or Si with one atom from group 15 or 16 of the Periodic System of the Elements, for instance O, S, NR1, PR1, N= or P=, wherein R1 is chosen from hydrogen, alkyl, aryl, silyl or stannyl groups, and determines the amount of substituents R and atoms D and is equal to 0, 1, 2 or 3.