2017
DOI: 10.1021/acs.organomet.7b00084
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Tuning the Si–N Interaction in Metalated Oligosilanylsilatranes

Abstract: Most known silatrane chemistry is concerned with examples where the attached silatrane substituent atom is that of an element more electronegative than silicon. The current study features silylated silatranes with a range of electropositive elements attached to the silyl group. The resulting compounds show different degrees of electron density on the silatrane-substituted silicon atom. This directly affects the Si–N interaction of the silatrane which can be monitored either by 29Si NMR spectroscopy or directly… Show more

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Cited by 27 publications
(17 citation statements)
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“…Silylated lanthanides are an interesting field of research pioneered by Schumann and co-workers. 49,50 Oligosilylated examples are still investigated by us 3134 and others. 5154 As mentioned, we initially devised the synthesis of oligosilanylene diide 2 to employ it as a ligand for Ln(II)-silyl complexes.…”
Section: Resultsmentioning
confidence: 99%
“…Silylated lanthanides are an interesting field of research pioneered by Schumann and co-workers. 49,50 Oligosilylated examples are still investigated by us 3134 and others. 5154 As mentioned, we initially devised the synthesis of oligosilanylene diide 2 to employ it as a ligand for Ln(II)-silyl complexes.…”
Section: Resultsmentioning
confidence: 99%
“…The signals of 3 (+3.5 ppm) and 8 (+19.5 ppm) reflect the downfield shift associated with the change of an alkoxy substituent for either a methyl or oligosilanyl group. One unusual feature of the silatranyloligosilanide NMR spectroscopy was the unusually strong downfield shift of the silatranyl Si signal upon silanide formation [ 3 , 5 ]. Starting from a resonance for the silatranyl silicon atom of tris(trimethylsilyl)silylsilatrane of δ Si = −52.8 ppm, the respective silanides obtained by abstraction of a trimethylsilyl group resonated at −11.8 ppm, yielding a ∆δ Si of +40.8 ppm.…”
Section: Resultsmentioning
confidence: 99%
“…Compound 12 is special as it has the substitution pattern of (MeO) 3 Si Si(SiMe 3 ) 2 K or silatranyloligosilanide (RO) 3 Si Si(SiMe 3 ) 2 K. The silocanyl Si 1 resonance of δ Si 1 = −13.9 ppm is very close to the respective silatrane [ 3 , 5 ] and even the strong upfield shift of the silanide signal at δ Si 2 = −210.2 ppm ( Table 1 ) is something we also observed for the silatranyloligosilanide cases [ 3 , 5 ].…”
Section: Resultsmentioning
confidence: 99%
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