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A Stable N-Heterocyclic Silylene with a 1,1'-Ferrocenediyl Backbone.

ABSTRACT: The N-heterocyclic silylene [{Fe(?⁵ -C₅ H₄ -NDipp)₂ }Si] (1DippSi, Dipp=2,6-diisopropylphenyl) shows an excellent combination of pronounced thermal stability and high reactivity towards small molecules. It reacts readily with CO₂ and N₂ O, respectively affording (1DippSiO₂ )₂ C and (1DippSiO)₂ as follow-up products of the silanone 1DippSiO. Its reactions with H₂ O, NH₃ , and FcPH₂ (Fc=ferrocenyl) furnish the respective oxidative addition products 1DippSi(H)X (X=OH, NH₂ , PHFc). Its reaction with H₃ BNH₃ unexpectedly results in B-H, instead of N-H, bond activation, affording 1DippSi(H)(BH₂ NH₃ ). DFT results suggest that dramatically different mechanisms are operative for these H-X insertions.

SUBMITTER: Weyer N

PROVIDER: S-EPMC7898919 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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A Stable N-Heterocyclic Silylene with a 1,1'-Ferrocenediyl Backbone.

Weyer Nadine N Heinz Myron M Schweizer Julia I JI Bruhn Clemens C Holthausen Max C MC Siemeling Ulrich U

Angewandte Chemie (International ed. in English) 20201201 5

The N-heterocyclic silylene [{Fe(η5 -C5 H4 -NDipp)2 }Si] (1DippSi, Dipp=2,6-diisopropylphenyl) shows an excellent combination of pronounced thermal stability and high reactivity towards small molecules. It reacts readily with CO2 and N2 O, respectively affording (1DippSiO2 )2 C and (1DippSiO)2 as follow-up products of the silanone 1DippSiO. Its reactions with H2 O, NH3 , and F ...[more]

PMID: 33058389

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