Summary. The hydrosilylation of 1-heptene, allyl glycidyl ether and, allyl polyether by heptamethylhydrotrisiloxane and poly (hydro, methyl)(dimethyl) siloxane catalyzed by rhodium (I) complexes (particularly [{Rh (μ–OSi Me 3)(cod)} 2]) in imidazolium ionic liquids (especially [Tri MIM] Me SO 4) gives heptyl and glycidyloxy functional (poly) siloxanes and silicone polyethers with high yield and selectivity. The catalytic system based on rhodium ...