Karstedt's catalyst is an organoplatinum compound derived from divinyl-containing disiloxane.

It is a colorless solid that is generally assumed to be a mixture of related Pt(0) alkene complexes.

[1][2] The catalyst is named after Bruce D. Karstedt, who developed it in the early 1970s while working for General Electric.

[3] Carbon-silicon bonds are often generated via hydrosilylation of alkenes.

The catalyst is produced by treatment of chloroplatinic acid by the divinyltetramethyldisiloxane.