phosphoranes การใช้

• Phosphorus ylides are unsaturated phosphoranes, known as Wittig reagents, e . g.
• Phosphoranes of the type R 3 P = CR 2 are more common and more important.
• Phosphoranes adopt a trigonal bipyramidal molecular geometry with the two apical bonds longer than the three equatorial bonds.
• Phosphoranes are also considered to be one of the resonance structures of ylides, these compounds feature a tetrahedral phosphorus center including a phosphorus carbon double bond.