Addition of Si–H across an unsaturated bond. For an alkene, the net products acquire one C–H and one C–Si bond. Alternative catalytic mechanisms can insert the alkene into either a metal–hydride or a metal–silyl bond; these alternatives should not be conflated.
A hydrosilylation cycle involving Si–H oxidative addition, alkene insertion into the metal–hydride bond, and C–Si reductive elimination. This defines the conventional version; insertion into a metal–silyl bond describes a modified alternative.
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Hydrosilylation is a chemical reaction that involves the addition of a silicon-containing compound, typically an organosilane, to a carbon-carbon double bond (C=C) or a carbon-heteroatom multiple bond. This reaction leads to the formation of silane products and is typically facilitated by catalysts, often transition metal catalysts such as platinum, rhodium, or nickel.