1985
DOI: 10.1002/zaac.19855280902
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Beiträge zur Chemie des Phosphors. 152. Funktionalisierte Cyclotriphosphane des Typs (t‐BuP)2PX (X = K, SiMe3, SnMe3, Cl, Br, PCl2, P(t‐Bu)Cl, P(t‐Bu)I)

Abstract: Funktionalisierte Cyclotriphosphane des Typs (t‐BuP)2PX mit elektropositiven oder elektronegativen Substituenten X wurden auf verschiedenen Synthesewegen dargestellt: KP(t‐BuP)2 (1) kann durch Reaktion von (t‐BuP)4 oder (t‐BuP)3 mit Kalium in 50–55proz. Reinheit gewonnen werden. Umsetzung von 1 mit Me3SiCl oder Me3SnCl ergibt die Cyclotriphosphane (t‐BuP)2PSiMe3 (2) bzw. (t‐BuP)2PSnMe3 (3); doch ist für 3 die Cyclokondensation von Cl(t‐Bu)PP(t‐Bu)Cl mit P(SnMe3)3 präparativ günstiger. In entsprechender Weise … Show more

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Cited by 42 publications
(28 citation statements)
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“…The solvent was removed under reduced pressure and the cyclo-(P 4 tBu 4 ) separated from 1 a by sublimation (120 8C/10 À3 Torr). Crystallization from THF at À 27 8C gave yellow cubic crystals of [Na(thf) 4 Density functional calculations: the electronic structures of 1 b and 2 were investigated with the program package Turbomole [33] employing the Becke ± Perdew functional B-P86. [32] The calculations for 1 b confirm the structural parameters given in Figure 1 with a P1ÀP5 bond that is 7 pm shorter than the other PÀP bonds.…”
Section: Methodsmentioning
confidence: 99%
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“…The solvent was removed under reduced pressure and the cyclo-(P 4 tBu 4 ) separated from 1 a by sublimation (120 8C/10 À3 Torr). Crystallization from THF at À 27 8C gave yellow cubic crystals of [Na(thf) 4 Density functional calculations: the electronic structures of 1 b and 2 were investigated with the program package Turbomole [33] employing the Becke ± Perdew functional B-P86. [32] The calculations for 1 b confirm the structural parameters given in Figure 1 with a P1ÀP5 bond that is 7 pm shorter than the other PÀP bonds.…”
Section: Methodsmentioning
confidence: 99%
“…
While the first cyclooligophosphanes (PR) n , [1] isolobal to cycloalkanes, were synthesized as early as 1877, [2] the first cyclooligophosphanide ions cyclo-(P n R nÀ1 ) À were only described 100 years later, [3,4] and today the number of such compounds that can be prepared in a targeted manner is still small. [5] The alkali metal compounds K[cyclo-(P 3 tBu 2 )], [3] K[cyclo-(P 5 Ph 4 )], [5] and Li[cyclo-(P n tBu nÀ1 )] (n 3 ± 5) [6,7] could not be isolated as pure compounds and were only characterized by 31 P NMR spectroscopy of an inseparable mixture; to date nothing is known about their coordination chemistry.
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mentioning
confidence: 99%
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“…Die Darstellung von (P t Bu) 3 erfolgte nach [1]. Der gemischtsubstituierte Dreiring (Me 3 SiP)(P t Bu) 2 wurde nach [24] dargestellt. Nach dieser Vorschrift wird die gewu È nschte Verbindung in einer Reinheit von ca.…”
Section: Experimenteller Teilunclassified
“…Im Unterschied zu den vier-und fünfgliedrigen Cyclophosphanen (PBu% und (PR)s (R = Me, Et) reagiert Tri-terf-butylcyclotriphosphan mit Oxida tionsmitteln, wie Luftsauerstoff, 3 Analoge Umsetzungen anderer difunktioneller 1,2-Diorganyldiphosphane, wie Li2(PBur)2 [12], (Me3Sn)2(PBur)2 [13] und H 2(PBu')2 [14], mit Bu'P(0)C12 ergaben keine Hinweise auf die Bildung von 1. Im Fall von Li2(PBu')2 wurden ausschließlich Folgeprodukte einer Metall-Halogen-Austauschreaktion beobachtet, während sich die beiden anderen Diphosphan-Derivate gegenüber B u'P(0)C l2 bei tieferer Temperatur als zu wenig reaktiv erwiesen.…”
Section: Präparative Ergebnisseunclassified