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Structural and Electronic Properties of Neutral Phosphoniobenzo[c]phospholides

✍ Scribed by Stefan Häp; Laszlo Szarvas; Martin Nieger; Dietrich Gudat

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
427 KB
Volume
2001
Category
Article
ISSN
1434-1948

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✦ Synopsis

The neutral monophosphoniobenzo[c]phospholides 2 and 3 were selectively prepared by reduction of bis(triphenylphosphonio)benzophospholide chloride 1[Cl]. Compound 3 was further converted into the borane adduct 6 and the thioxophosphorane 7. All products were characterised by spectroscopic methods and X-ray diffraction. The most notable features of the molecular structures are the significantly different distances of the two P-C bonds adjacent to the two-coordinate phosphorus atom (P2-C1 175.0-176.6, P2-C3 171.7-173.5 pm), and a short exocyclic C-P(phosphonio) bond (C1-P1 172.5-173.7 pm) relative to cationic derivatives such as 1. Structure comparisons revealed further variations in the bond lengths, which can be related to the changes in [a] Anorganisch Chemisches

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