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. 2018 Mar 12;57(12):3217-3221.
doi: 10.1002/anie.201712791. Epub 2018 Feb 22.

Isolation of a Cationic Platinum(II) σ-Silane Complex

Pablo Ríos  1 , Hugo Fouilloux  1 , Pietro Vidossich  2   3 , Josefina Díez  4 , Agustí Lledós  2 , Salvador Conejero  1
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Isolation of a Cationic Platinum(II) σ-Silane Complex

Pablo Ríos et al. Angew Chem Int Ed Engl. .

Abstract

The platinum complex [Pt(It Bui Pr')(It Bui Pr)][BArF ] interacts with tertiary silanes to form stable (<0 °C) mononuclear PtII σ-SiH complexes [Pt(It Bui Pr')(It Bui Pr)(η1 -HSiR3 )][BArF ]. These compounds have been fully characterized, including X-ray diffraction methods, as the first examples for platinum. DFT calculations (including electronic topological analysis) support the interpretation of the coordination as an unusual η1 -SiH. However, the energies required for achieving a η2 -SiH mode are rather low, and is consistent with the propensity of these derivatives to undergo Si-H cleavage leading to the more stable silyl species [Pt(SiR3 )(It Bui Pr)2 ][BArF ] at room temperature.

Keywords: density-functional calculations; platinum; silane; structure elucidation; x-ray diffraction.

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