Bis(tri-tert-butylsilyl)silylene: Triplet ground state silylene

Journal of the American Chemical Society

Volumn 125, Issue 17, 2003, Pages 4962-4963

  Sekiguchi, Akira ^a   Tanaka, Takashi ^a   Ichinohe, Masaaki ^a   Akiyama, Kimio ^b   Tero Kubota, Shozo ^b  

^a UNIVERSITY OF TSUKUBA   (Japan)

^b TOHOKU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

BIS(TRI TERT BUTYLSILYL)SILYLENE; CARBENE; CYCLOHEXANE DERIVATIVE; GLASS; METHYLCYCLOHEXANE; UNCLASSIFIED DRUG;

ARTICLE; ELECTRON SPIN RESONANCE; PHOTOLYSIS; SPECTROMETER; TEMPERATURE DEPENDENCE;

EID: 0037473528     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja020929e     Document Type: Article

References (25)

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14. For details of the experimental procedure and spectral data of all new compounds, see the Supporting Information.
15. The EPR signal observed at 340 mT corresponds to a g value of 2.0055, which is very similar to that of typical silyl radicals, but its structure is unclear at this moment.
16. -1 from the line width of the signal at 845 mT.
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21. 3 in the silacyclopropenes are 137.9° for 1a and 138.1° for 1b (the values are determined by X-ray crystallography). See the Supporting Information.
22. Grev, R. S.; Schaefer, H. F., III; Gaspar, P. P. J. Am. Chem. Soc. 1991, 113, 5638 and reference therein.
23. Photolysis (λ > 280 nm) of 1a in cyclohexane containing a 60-fold excess of cis-2-butene at room temperature gave 3 (18%), 4 (2%), and 5a (30%). No silacyclopropane derivative by the [1 + 2] cycloaddition of 2 to cis-2-butene was found.
24. 2SiXM (X = halogen, M = alkali metal) cannot be ruled out.
25. S-T = 5.6 kcal/mol).