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Platinum-catalyzed reactions between Si–H groups as a new method for cross-linking of silicones

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Abstract

The platinum-catalyzed self-cross-linking of polymethylhydrosiloxane at RT in air was performed for the first time and proved by 1H, 13C, and 29Si SSNMR and swelling measurements. Quantum chemical modeling of possible structures was investigated. Platinum (0) and (II) complexes were used as catalysts between the Si–H groups of polymethylhydrosiloxane. Karstedt's catalyst leads to Si–O–Si and Si–Si bond formation, but cis-[PtCl2(BnCN)2] generates predominantly Si–O–Si cross-links. cis-[PtCl2(BnCN)2] allows creating high-quality silicone rubbers without visible mechanical defects. This cross-linking approach can be used to obtain new Si–H-containing silicone materials.

Graphical abstract: Platinum-catalyzed reactions between Si–H groups as a new method for cross-linking of silicones

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Publication details

The article was received on 05 Apr 2019, accepted on 08 May 2019 and first published on 08 May 2019


Article type: Paper
DOI: 10.1039/C9OB00791A
Org. Biomol. Chem., 2019, Advance Article

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    Platinum-catalyzed reactions between Si–H groups as a new method for cross-linking of silicones

    K. V. Deriabin, E. K. Lobanovskaia, A. S. Novikov and R. M. Islamova, Org. Biomol. Chem., 2019, Advance Article , DOI: 10.1039/C9OB00791A

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