ethenylsilane

Ethenylsilane, also known as vinylsilane, is an organosilicon compound with the chemical formula C2H6Si. Its structure consists of a silicon atom bonded to three hydrogens and to a vinyl group (CH2=CH–), giving CH2=CH–SiH3 as a common representation. The vinyl substituent provides an unsaturated site for further chemical reactions, while the silicon-hydrogen bonds impart typical silane reactivity.

Physical and chemical properties are characteristic of small organosilicon species. Ethenylsilane is a volatile, flammable material that can exist as a colorless gas or liquid at room temperature, depending on pressure and purity. It readily undergoes hydrolysis in the presence of moisture, forming silanols and hydrogen gas. The compound can participate in hydrosilylation and other reactions at the vinyl group, enabling its use as a monomer or reactive building block in broader organosilicon chemistry.

Production and handling typically involve hydrosilylation-type routes that attach a vinyl group to a silicon center, often starting from a silicon hydride and an unsaturated hydrocarbon or from vinyl-containing precursors. Due to its reactivity with water and air, ethenylsilane is generally stored and handled under inert, dry conditions in properly ventilated facilities.

Applications of vinylsilane include use as a monomer or comonomer for vinylsilane-containing polymers and silicones, as well as a coupling agent or reactive intermediate in surface modification and adhesion-promoting formulations. Its vinyl functionality allows incorporation into polymer networks and subsequent post-polymerization transformations.