Diboryne
A diboryne in chemistry is a chemical compound containing a boron–boron triple bond. Such compounds are of fundamental importance in the study of chemical bonding, though only few have been reported. A diboryne stabilized by two carbon monoxide groups, (OC)B≡B(CO), was reported isolated in matrix isolation in 2002.[1] A diboryne stable at room temperature with two N-heterocyclic carbene (NHC) units was reported by Holger Braunschweig et al. in 2012.[2] In terms of qualitative molecular orbital theory, the B2 molecule itself is expected to have a single bond, but with NHC ligands, the third excited state yields a triple bond.[3]
See also
[edit]References
[edit]- ^ Zhou, M; Tsumori, N; Li, Z; Fan, K; Andrews, L; Xu, Q (2002). "OCBBCO: A neutral molecule with some boron-boron triple bond character". Journal of the American Chemical Society. 124 (44): 12936–7. doi:10.1021/ja026257+. PMID 12405806.
- ^ Braunschweig, H.; Dewhurst, R. D.; Hammond, K.; Mies, J.; Radacki, K.; Vargas, A. (2012). "Ambient-Temperature Isolation of a Compound with a Boron-Boron Triple Bond". Science. 336 (6087): 1420–2. Bibcode:2012Sci...336.1420B. doi:10.1126/science.1221138. PMID 22700924. S2CID 206540959.
- ^ Holzmann, N.; Stasch, A.; Jones, C.; Frenking, G. (2011). "Structures and Stabilities of Group 13 Adducts...". Chemistry: A European Journal. 17 (1521–3765): 13517–13525. doi:10.1002/chem.201101915. PMID 22038936.