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. 2021 Apr 23;26(9):2460.
doi: 10.3390/molecules26092460.

Synthesis of trans-Mono(silyl)palladium(II) Bromide Complexes

Melvyn B Ansell  1 , George E Kostakis  1 , Oscar Navarro  1   2 , John Spencer  1
Affiliations

Synthesis of trans-Mono(silyl)palladium(II) Bromide Complexes

Melvyn B Ansell et al. Molecules. .

Abstract

The stoichiometric reaction of cis-[Pd(ITMe)2(SiR3)2], where (SiR3 = SiMe3 and SiMe2Ph and ITMe = 1,3,4,5-tetramethylimidazol-2-ylidene) with allyl bromide affords the corresponding allylsilanes along with complexes of the type trans-[Pd(ITMe)2(SiR3)(Br)]. The structure of trans-[Pd(ITMe)2(SiMe2Ph)Br] 2b has been determined in the solid state and displays a slightly distorted square-planar geometry with the two N-heterocyclic carbene ligands in a trans-configuration.

Keywords: N-heterocyclic carbene; allylsilane; palladium; silicon.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Scheme 1
Scheme 1
Stoichiometric synthesis of mono(silyl)palladium bromide complexes.
Figure 1
Figure 1
Molecular structure of 2b. Hydrogen atoms are omitted for clarity. Selected bond lengths [Å] and angles [o]: Pd1-Br1 2.6333(7), Pd-Si1 2.2948(18), Pd1-C1 2.028(5), Pd1-C8 2.025(5); C1-Pd1-Br1 94.97(16), C1-Pd1-Si1 89.15(17), C8-Pd1-Br1 87.62(16), C8-Pd1-Si1 88.60(17), C1-Pd1-C8 177.2(2).
Scheme 2
Scheme 2
Possible mechanistic routes for the formation of 2.
See this image and copyright information in PMC

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