2003
DOI: 10.1002/zaac.200300074
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Reaktionen eines hexachlorsubstituierten Diazadiphosphetidins mit Diethylaminotrimethylsilan

Abstract: Die Umsetzung des 2, 2, 2, 4, 4, 4‐hexachlorsubstituierten Diazadiphosphetidins 1 mit unterschiedlichen Mengen Diethylaminotrimethylsilan führte zum Diazadiphosphetidin 2b oder zu der Diphosphonium‐Verbindung 3. Wurde 1 mit zwei λquivalenten Aminosilan umgesetzt, wurde das Tetrachlordiazadiphosphetidin 2b isoliert, mit überschüssigem Aminosilan entstand dagegen das Salz 3. Eine Öffnung des Vierrings, wie bei der Reaktion mit primären Aminen, wurde nicht beobachtet. Erst die Hydrolyse von 3 öffnete den Ring; da… Show more

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Cited by 9 publications
(3 citation statements)
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“…It would appear that 5 is only stable in the solid‐state as 31 P NMR spectra of solutions in dichloromethane prepared from crystals of 5 contained many signals not assignable to 5 . Similar observations have been reported previously; other five‐coordinate phosphorus compounds are obtained only at –20 °C and readily decompose in solution at ambient temperatures 36. We therefore speculate that 4 is formed in the reaction and subsequently converts to 5 (Scheme ) 37…”
Section: Resultssupporting
confidence: 89%
“…It would appear that 5 is only stable in the solid‐state as 31 P NMR spectra of solutions in dichloromethane prepared from crystals of 5 contained many signals not assignable to 5 . Similar observations have been reported previously; other five‐coordinate phosphorus compounds are obtained only at –20 °C and readily decompose in solution at ambient temperatures 36. We therefore speculate that 4 is formed in the reaction and subsequently converts to 5 (Scheme ) 37…”
Section: Resultssupporting
confidence: 89%
“…It is worthwhile mentioning that dimerization of some neutral iminophosphoranes and the structure of the resulting diamagnetic diphosphetidines has been reported [10,11].…”
Section: Epr Spectramentioning
confidence: 98%
“…33 A similar hydrolytic ring opening was, however, reported for a diazadiphosphetidinium salt. 34 A plausible reason for the particular reactivity of 3c lies in the combination of high ring strain in the P 2 N 2 -ring with efficient protection of the PN-bonds in the 1,3,2-diazaphospholene rings by the flanking 2,6-diisopropylphenyl groups.…”
Section: Reactivity Of Cyclodiphosphazene 3cmentioning
confidence: 99%