1991
DOI: 10.1002/zaac.19916060111
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Bis(trimethylsilyl)phosphide der Alkalimetalle

Abstract: Die Bis(trimethylsilyl)phosphide aller Alkalimetalle, MP[Si(CH3)]2 (M = Li 3, Na 4, K 5, Rb 6, Cs 7), wurden in einfacher Weise durch Umsetzung von Bis(trimethylsilyl)phosphan mit dem entsprechenden Alkalimetall in Gegenwart von Naphthalen oder mit dem Metallhydrid hergestellt. Die Signale in den 31P‐NMR‐Spektren verschieben sich mit Zunahme der Ordnungszahl des Alkalimetall‐Ions zu tieferem Feld (δ: 3 = 4 < 5 < 6 < 7). 3 und 4 bilden Solvate. Eine vereinfachte Synthese von P[Si(CH3)3]3 wird beschrieben.

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Cited by 30 publications
(13 citation statements)
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“…Two-component reaction between tris(trimethylsilyl)phosphane (2) and cesium fluoride (1) (3 h in dioxane at 90°C) led exclusively to the formation of cesium bis(trimethylsilyl)phosphide (4). Progress of the reactions can be accurately monitored by 31 P NMR spectroscopy, since the compounds of interest have distinctive chemical shifts: δ = -276.10 (4); [6] 33.2 (10); [7] 117.24 (11) The formation of the three products 4, 10 and 11 is expected on the basis of mechanistic studies between lithium bis(trimethylsilyl)phosphide and 2,4,6-tri-tert-butylbenzoyl chloride [7] and tris(trimethylsilyl)phosphane and cesium tert-butoxide. [6] The formation of the second three products 9, 12 and 13 is new and specific to the use of CsF.…”
Section: Resultsmentioning
confidence: 99%
“…Two-component reaction between tris(trimethylsilyl)phosphane (2) and cesium fluoride (1) (3 h in dioxane at 90°C) led exclusively to the formation of cesium bis(trimethylsilyl)phosphide (4). Progress of the reactions can be accurately monitored by 31 P NMR spectroscopy, since the compounds of interest have distinctive chemical shifts: δ = -276.10 (4); [6] 33.2 (10); [7] 117.24 (11) The formation of the three products 4, 10 and 11 is expected on the basis of mechanistic studies between lithium bis(trimethylsilyl)phosphide and 2,4,6-tri-tert-butylbenzoyl chloride [7] and tris(trimethylsilyl)phosphane and cesium tert-butoxide. [6] The formation of the second three products 9, 12 and 13 is new and specific to the use of CsF.…”
Section: Resultsmentioning
confidence: 99%
“…NMR Spectra were recorded on a Bruker Avance 400 (400. 13 [7], BClH 2 AE NMe 3 [8], AlH 3 AE NMe 3 [9]. [Cr(CO) 6 ] was obtained commercially and used as received.…”
Section: General Remarksmentioning
confidence: 99%
“…6: 103 mg (0.18 mmol) I b und 0.37 mmol LiE(SiMe,),,2THF (E = P [27]. As [28]) wurden in 10 mL Toluol 48 h bei 80 bzw.…”
Section: Experimentellesunclassified