We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Donor-Stabilized 1,3-Disila-2,4-diazacyclobutadiene with a Nonbonded Si⋅⋅⋅Si Distance Compressed to a Si=Si Double Bond Length.
- Authors
Gau, David; Nougué, Raphael; Saffon ‐ Merceron, Nathalie; Baceiredo, Antoine; De Cózar, Abel; Cossío, Fernando P.; Hashizume, Daisuke; Kato, Tsuyoshi
- Abstract
A donor-stabilized 1,3-disila-2,4-diazacyclobutadiene presents an exceptionally short nonbonded Si⋅⋅⋅Si distance (2.23 Å), which is as short as that of Si=Si bonds (2.15-2.23 Å). Theoretical investigations indicate that there is no bond between the two silicon atoms, and that the unusual geometry can be related to a significant coulomb repulsion between the two ring nitrogen atoms. This chemical pressure phenomenon could provide an alternative and superior way of squeezing out van der Waals space in highly strained structures, as compared to the classical physical methods.
- Subjects
CYCLOBUTADIENE; AZA compounds; DOUBLE bonds; ELECTRON donors; SILICON; CHEMICAL bond lengths
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 47, p14893
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201608416