Synthesis, structural characterization and reactivity towards methanol of a bis(silyl)platinum(II) complex bearing a chelating depe ligand

• Successive oxidative addition of a bis(hydrosilane) to a Pt(0) complex.
• Reactivity toward a sterically unhindered alcohol.
• An unusual tetra-alkoxy substituted silyl platinum(II) compound.

Treatment of 1,2-C6H4(SiH3)(SiH3) (1) with [Pt(depe)(PEt3)2] (depe = Et2PCH2CH2PEt2) in the ratio of 1:1 yields the complex [PtII{1,2-C6H4(SiH2)(SiH2)}(depe)] (2), which has unique reactivity towards sterically unhindered alcohol to form an unusual tetra-alkoxy substituted silyl platinum(II) compound (3). Only 2 examples of bis(silyl)platinum(II) complexes prepared from this chelating hydrosilane ligand have been registered in the Cambridge Structural Database. The structure of complex (3) was unambiguously determined by multinuclear NMR spectroscopic studies and single crystal X-ray analysis.

Treatment of 1,2-C6H4(SiH3)(SiH3) (1) with Pt(depe)(PEt3)2 (depe = Et2PCH2CH2PEt2) in the ratio of 1:1 yields the complex {1,2-C6H4(SiH2)(SiH2)}PtII(depe) (2), which has unique reactivity towards sterically unhindered alcohol to form an unusual tetra-alkoxy substituted silyl platinum(II) compound (3). Only 2 examples of bis(silyl)platinum(II) complexes prepared from this chelating hydrosilane ligand have been registered in the Cambridge Structural Database. The structure of complex (3) was unambiguously determined by multinuclear NMR spectroscopic studies and single crystal X-ray analysis.Figure optionsDownload as PowerPoint slide