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A stable two-coordinate acyclic silylene.

Protchenko, AV; Birjkumar, KH; Dange, D; Schwarz, AD; Vidovic, D; Jones, C; Kaltsoyannis, N; (2012) A stable two-coordinate acyclic silylene. J Am Chem Soc , 134 (15) 6500 - 6503. 10.1021/ja301042u.

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Simple two-coordinate acyclic silylenes, SiR(2), have hitherto been identified only as transient intermediates or thermally labile species. By making use of the strong σ-donor properties and high steric loading of the B(NDippCH)(2) substituent (Dipp = 2,6-(i)Pr(2)C(6)H(3)), an isolable monomeric species, Si{B(NDippCH)(2)}{N(SiMe(3))Dipp}, can be synthesized which is stable in the solid state up to 130 °C. This silylene species undergoes facile oxidative addition reactions with dihydrogen (at sub-ambient temperatures) and with alkyl C-H bonds, consistent with a low singlet-triplet gap (103.9 kJ mol(-1)), thus demonstrating fundamental modes of reactivity more characteristic of transition metal systems.

Type: Article
Title: A stable two-coordinate acyclic silylene.
Location: United States
DOI: 10.1021/ja301042u
Language: English
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/1349624
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