Triazene oxide-transition metal complexes as hydrosilylation catalysts

摘要

A process is claimed for the reaction of SiH-contg. organosilicon cpds. (A) with organic cpds. contg. multiple aliphatic double bonds (B) in the presence of triazene oxide-transition metal complexes of formula M(ANNNOR1)aXb (I), which are activated by heating at 50-250 degrees C and/or by irradiation with light. M = Pt, Pd, Rh, Ru, Os or Ir, R1 = opt. substd. 1-18C hydrocarbyl, -Si(R2)v(OR2)3-c or A, R2 = 1-8C alkyl, A = a gp. of formula, G = CH or N, Q = S, O or NH, R3 = opt. substd. 1-12C hydrocarbyl, F, Cl, Br, I, H, NH2, N(R2)2, OH, OR2, SH, CN, COOH, COCl, CONH2, COR2, CHO, SO2NHR2, SO3H, SO2Cl or -R4-Si(R2)c(OR2)3-c, R4 = 1-8C hydrocarbylene, ligand X = Cl, Br, I, NH3, PEt3, PPh3, H, CO, 1,5-cyclo-octadiene, pyridine, bipyridine, acetate, acetylacetonate, PhCN, ethylenediamine, MeCN, 2,5-norbornadiene, nitrate, nitrite, H2O, benzene, diphenylphosphinoethane, 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, ethylene or diphenylacetylene, a = 1, 2, 3 or 4, b = 0 or 1-6, c = 0, 1, 2 or 3. Also claimed are crosslinkable organopolysiloxane compsns. (C) contg. cpd. (A), cpd. (B) and complex (I), or organopolysiloxanes contg. both SiH gps. and gps. with aliphatic multiple bonds instead of cpds. (A) and (B). Also claimed are triazene-Pt complexes of formula Pt(ANNNOR1)aXn (VII) and a process for the prodn. of (VII) by reacting triazene hydroxides of formula ANNNOHR1 (VIII) with Pt cpds. of formula PtXa (IX) (with d = 1-6) in presence of base.