An air-stable, Zn2+-based catalyst for hydrosilylation of alkenes and alkynes

Kristina Groutchik, Kuldeep Jaiswal, Roman Dobrovetsky*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Hydrosilylation of C-C double and C-C triple bonds is one of the most widely used processes in organosilicon chemistry, mostly catalyzed by Pt-based complexes. We report here the synthesis of an air-stable dicationic Zn2+-based complex in a hemilabile tris(2-methyl-6-pyridylmethyl) phosphine (TmPPh) ligand,12+[B(C6F5)4]2. When heated,12+[B(C6F5)4]2activates Si-H bonds reversiblyvialigand/metal cooperation between Lewis acidic Zn2+and Lewis basic N centers in a frustrated Lewis pair (FLP) type fashion. Consequently,12+[B(C6F5)4]2was found to be an effective catalyst for hydrosilylation reactions of C-C double and C-C triple bonds. Remarkably, these hydrosilylation reactions can be loaded under aerobic conditions, as well as, in some cases, work under neat conditions. The mechanism of the activation of the Si-H bond and the hydrosilylation reaction is proposed based on experiments and density functional theory (DFT) calculations.

Original languageEnglish
Pages (from-to)5544-5550
Number of pages7
JournalOrganic and Biomolecular Chemistry
Issue number25
StatePublished - 7 Jul 2021


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