Reactivity of a silylsilylene bearing a functionalized diaminochlorosilyl substituent.

  title={Reactivity of a silylsilylene bearing a functionalized diaminochlorosilyl substituent.},
  author={Shuhua Zhang and Hui-Xian Yeong and Cheuk-Wai So},
  volume={17 12},
The reactivity of the silylsilylene [{PhC(NtBu)(2)}SiSi(Cl){(NtBu)(2)C(H)Ph}] (2) towards diphenylacetylene, azobenzene, 2,6-diisopropylphenyl azide, sulfur, and selenium is described. The reaction of 2 with one equivalent of azobenzene in toluene afforded compound 3, which is the first example of a 1,2-diaza-3,4-disilacyclobutane containing a pentacoordinate silicon center. The formation of 3 can be explained by a [1+2] cycloaddition of the divalent Si center in 2 with PhN=NPh to form a… 
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