Université de Toulouse, UPS, and CNRS, LHFA, 118 route de Narbonne, F-31062 Toulouse, France.
J Am Chem Soc. 2010 Jul 7;132(26):8864-5. doi: 10.1021/ja103422b.
The synthesis of a new family of boryl-substituted methylenephosphonium derivatives, the phosphorus analogues of iminium salts, has been developed. They were used in the preparation of the first stable boryl(phosphino)carbene, which has been fully characterized by NMR spectroscopy and X-ray crystallography. Density functional theory calculations indicate that these carbenes can be classified as push-pull carbenes with a relatively small singlet-triplet energy gap.
我们合成了一系列新型的硼取代亚甲基膦翁盐衍生物，即亚胺盐的磷类似物。我们利用这些衍生物首次制备了首例稳定的硼（膦）卡宾，并通过核磁共振波谱和 X 射线晶体学对其进行了全面表征。密度泛函理论计算表明，这些卡宾可以归类为具有较小单重态-三重态能隙的推拉卡宾。
