Chlorophosphaethenyl phosphonium ions by chloride abstraction from dichlorophosphanyl ylides

✍ Scribed by Hans-Peter Schrödel; Alfred Schmidpeter; Heinrich Nöth

• Book ID: 101265113
• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 334 KB
• Volume: 7
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/(sici)1098-1071(199610)7:5<355::aid-hc11>3.0.co;2-p

✦ Synopsis

Dichlorophosphanyl ylides readily lose a chloride ion to Lewis acidic metal chlorides. In the cations so generated, a considerable part of the phosphenium charge is transferred to the phosphonium center leading to a chlorophosphaalkene structure. This is demonstrated by N M R data as well as by a n X-ray structure analysis. The residual phosphenium charge becomes visible in weak but definite contacts with the Gael; anions that expand the coordination sphere of the P(III) atom from ty-trigonal two-coordination to ty-trigonal bipyramidal (V-TBP) tetra-coordination. 0 I996 John