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Volumn 129, Issue 7, 2007, Pages 1860-1861

Titanium-catalyzed dehydrocoupling of silanes: Direct conversion of primary monosilanes to titanium(0) oligosilane complexes with agostic α-Si-H⋯Ti interactions

Author keywords

[No Author keywords available]

Indexed keywords

HYDROGEN; OLIGOMER; SILANE DERIVATIVE; TITANIUM;

EID: 33847248940     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja067503a     Document Type: Article
Times cited : (25)

References (54)
  • 22
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    • 3 remains unchanged in this step.
    • 3 remains unchanged in this step.
  • 23
    • 33847291692 scopus 로고    scopus 로고
    • 2.
    • 2.
  • 24
    • 20444447581 scopus 로고    scopus 로고
    • 4i See also: Wu, F.; Jordan, R. F. Organometallics 2005, 24, 2688-2697.
    • 4i See also: Wu, F.; Jordan, R. F. Organometallics 2005, 24, 2688-2697.
  • 25
    • 33847320504 scopus 로고    scopus 로고
    • 1H NMR spectrum of 1 contains five equal-intensity Si-H resonances with complex line shapes. Two (at δ 4.50 and 4.75), due to hydrogen atoms that bridge between Si and Ti, are strongly coupled to all four phosphorus nuclei. The δ 4.50 resonance is coupled to a Si-H resonance at δ 6.25, and the δ 4.75 resonance is coupled to a Si-H resonance at δ 6.35. The H-H coupling constants of 14.5 Hz between these sites are consistent with gem H-Si-H couplings. The fifth Si-H resonance at δ 3.27 is a broad singlet and is assigned to the single Si-H group on the central silicon atom of the trisilane unit.
    • 1H NMR spectrum of 1 contains five equal-intensity Si-H resonances with complex line shapes. Two (at δ 4.50 and 4.75), due to hydrogen atoms that bridge between Si and Ti, are strongly coupled to all four phosphorus nuclei. The δ 4.50 resonance is coupled to a Si-H resonance at δ 6.25, and the δ 4.75 resonance is coupled to a Si-H resonance at δ 6.35. The H-H coupling constants of 14.5 Hz between these sites are consistent with gem H-Si-H couplings. The fifth Si-H resonance at δ 3.27 is a broad singlet and is assigned to the single Si-H group on the central silicon atom of the trisilane unit.
  • 26
    • 33847315459 scopus 로고    scopus 로고
    • 2 = 0.0779 for 433 variables and 5847 unique data.
    • 2 = 0.0779 for 433 variables and 5847 unique data.
  • 31
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    • 2; Hencken, G.; Weiss, E. Chem. Ber. 1973, 106, 1747-1751)
    • 2; Hencken, G.; Weiss, E. Chem. Ber. 1973, 106, 1747-1751)
  • 32
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    • has been questioned: Hao, L.; Lebuis, A.-M.; Harrod, J. F.; Samuel, E. J. Chem. Soc., Chem. Commun 1997, 2193-2194.
    • has been questioned: Hao, L.; Lebuis, A.-M.; Harrod, J. F.; Samuel, E. J. Chem. Soc., Chem. Commun 1997, 2193-2194.
  • 39
    • 0000145640 scopus 로고    scopus 로고
    • For reviews of the structure and bonding in transition metal silane complexes, see a
    • For reviews of the structure and bonding in transition metal silane complexes, see (a) Corey, J. Y.; Braddock-Wilking, J. Chem. Rev. 1999, 99, 175-292.
    • (1999) Chem. Rev , vol.99 , pp. 175-292
    • Corey, J.Y.1    Braddock-Wilking, J.2
  • 50
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    • For recent theoretical studies of M⋯H-Si agostic interactions, see: a
    • For recent theoretical studies of M⋯H-Si agostic interactions, see: (a) Fan, M-F.; Lin, Z. Organometallics 1999, 18, 286-289.
    • (1999) Organometallics , vol.18 , pp. 286-289
    • Fan, M.-F.1    Lin, Z.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.