Thermal and Photochemical Formation of Phospholenes and Tetrahydrophosphorins from Cyclophosphines and Dienes

✍ Scribed by Prof. Ulrich Schmidt; I. Boie

• Publisher: John Wiley and Sons
• Year: 1966
• Tongue: English
• Weight: 113 KB
• Volume: 5
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.196610381

✦ Synopsis

Some elements of the third and subsequent periods (phosphorus, antimony, sulfur, selenium, and others) can form five covalent bonds, i.e. can possess a stable decet of electrons.

Accordingly, many compounds of these elements exhibit carbene-like properties, even when the atom still possesses eight valence electrons. In particular, phosphoranes and phosphine oxides with covalent structures may be regarded as adducts of such carbene analogues with carbenes or oxygen [1691.