On the Electronic Properties of Substituted Phosphanylcarbenes

✍ Scribed by Wolfgang W. Schoeller

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 230 KB
• Volume: 2000
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(200002)2000:2<369::aid-ejic369>3.0.co;2-r

✦ Synopsis

A phosphanyl group exerts much less π-conjugation which the two functional groups are incorporated into a ring system and the phosphorus atoms are substituted by properties than an amino group. On this basis, corresponding carbene structures exhibit much smaller singlet-triplet phosphoraniminato groups. Then the singlet-triplet energy separations become essentially larger than for the Bertrand-energy separations. Of the various structures investigated quantum-chemically the largest singlet-triplet energy type (push-pull) carbenes. separations are predicted for cyclic diphosphanylcarbenes, in