Donorfreie und donorhaltige supersilylalkalimetalle tBu3SiM1: Synthesen, charakterisierung, strukturen

Wibeŕg, Nils; Amelunxen, Kerstin; Lerner, Hans‐Wolfram; Schuster, Harald; Nöth, Heinrich; Krossing, Ingo; Schmidt‐Amelunxen, Martin; Seifert, Thomas

doi:10.1016/s0022-328x(97)00306-9

Cited by 124 publications

(194 citation statements)

References 40 publications

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“…6 (the triphosphenide Mes 2 *-P 3 Li was not investigated by means of X-ray diffraction; however according to 31 P-NMR it also has an acyclic structure [6] ). The 31 P{ 1 H}-NMR spectrum of the anion in 1a shows two signals with the splitting pattern of an AX 2 spin system in the range typical for the unsaturated twocoordinate phosphorus atom in diphosphenes [14] , and in a range which is possible for an unsaturated anionic phosphorus atom [9b] ( Figure 2).…”

Section: (1a)mentioning

confidence: 99%

“…Figure 3. Observed (a) and calculated [20] (b) 31 The 31 P{ 1 H}-NMR spectrum of the 1,1Ј-bicyclotriphosphane 12 shows three multiplets with the classical splitting pattern of an AAЈBBЈMMЈ spectrum. Approximate values for δ P and J PP can be estimated by simple examination of the experimental spectrum [19] ; starting from these values the spectrum can be solved by iterative fitting [20] (Figure 4).…”

Section: (1a)mentioning

confidence: 99%

“…The structure of the bicyclo[3.1.0]hexaphosphane 13 can be derived from the NMR data after a complete analysis of its 31 P{ 1 H}-NMR spectrum. It shows, as in the case for the analogous hexaphosphanes P 6 tBu 4 [17] and P 6 Cp* 4 [18] the four multiplets of an AAЈBBЈMX spin system ( Figure 5).…”

Section: (1a)mentioning

confidence: 99%

“…With silyl substituents the allyl preference increases slightly [E rel for cyclic (H 3 Si) 2 P 3 Ϫ is 7.6 kcal/mol]. In contrast, neutral compounds with a P 3 framework like P 3 H 3 (14) [26] , (H 3 Si) 2 ) with respect to 19 is 12.7 kcal/mol)]. Therefore, cyclization of the "protonated anion" 1 to 11 and ring opening of the "reduced halogenide" 9 to 1 is in agreement with our ab initio results for the simple models R 2 P 3 X and R 2 P 3 Ϫ with R ϭ H or SiH 3 and X ϭ H or Cl.…”

Section: (1a)mentioning

confidence: 99%

“…for R ϭ H, SiH 3 ) and the cyclic isomer could have two 31 P-NMR signals. The question is which R 2 P 3 Na model structure provides computed NMR data which are in agreement with the experiment?…”

Section: (1a)mentioning

confidence: 99%

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The Triphosphide (tBu3Si)2P3Na: Formation, X-ray and Ab initio Structure Analyses, Protonation and Oxidation to Triphosphane (tBu3Si)2P3H and Hexaphosphanes (tBu3Si)4P6⋆

Wibeŕg¹,

Wörner²,

Lerner³

et al. 1998

Eur. J. Inorg. Chem.

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Section: (1a)mentioning

confidence: 99%

Section: (1a)mentioning

confidence: 99%

Section: (1a)mentioning

confidence: 99%

Section: (1a)mentioning

confidence: 99%

Section: (1a)mentioning

confidence: 99%

See 3 more Smart Citations

The Triphosphide (tBu3Si)2P3Na: Formation, X-ray and Ab initio Structure Analyses, Protonation and Oxidation to Triphosphane (tBu3Si)2P3H and Hexaphosphanes (tBu3Si)4P6⋆

Wibeŕg¹,

Wörner²,

Lerner³

et al. 1998

Eur. J. Inorg. Chem.

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Tetrasupersilyl-tristannaallene and -tristannacyclopropene (tBu3Si)4Sn3 – Isomers with the Shortest Sn=Sn Double Bonds to Date

Wibeŕg

Lerner

Vasisht

et al. 1999

Eur. J. Inorg. Chem.

120

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The dark blue, air‐ and moisture‐sensitive, thermolabile tristannaallene R*2Sn=Sn=SnR*2 (5) (R* = SitBu3) is prepared by reaction of Sn(OtBu)2 or Sn[N(SiMe3)2]2 with R*Na in pentane/benzene at –25°C. The dark red‐brown, air‐sensitive, moisture‐insensitive, and thermostable cyclotri‐stannene R*4Sn3 (6) with a –R*Sn=SnR*– moiety as part of a Sn3 ring is obtained from the reaction of Sn(OtBu)2 or Sn[N(SiMe3)2]2 with R*Na in pentane at 25°C or from the isomerization of 5 at room temperature (τ1/2 = 9.8 h). According to the result of X‐ray structural analyses the Sn3 framework of chiral 5 is bent (156°) and the terminal Sn atoms have pyramidal surroundings. The SnSn double bonds in 5 (2.68 Å) are shorter than those found for the hitherto structurally investigated distannenes (2.77–2.91 Å). Even shorter is the double bond in 6 (2.59 Å). The unsaturated Sn atoms here have nearly planar surroundings in perfect analogy to the carbon atoms in CC double bonds. The SnSn double bond in 6 can therefore be considered as the first “true” Sn=Sn bond. The structures of 5 and 6 can be deduced also from 119Sn‐ and 29Si‐NMR studies in solution.

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Lithium-, Natrium- und Kupfer(I)-supersilylphosphandiide M2PSitBu3: Verbindungen mit neuartigen sphärischen (M2P)n-Gerüsten

Wibeŕg¹,

Wörner²,

Fenske³

et al. 2000

Angewandte Chemie

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Donorfreie und donorhaltige supersilylalkalimetalle tBu3SiM1: Synthesen, charakterisierung, strukturen

Cited by 124 publications

References 40 publications

The Triphosphide (tBu3Si)2P3Na: Formation, X-ray and Ab initio Structure Analyses, Protonation and Oxidation to Triphosphane (tBu3Si)2P3H and Hexaphosphanes (tBu3Si)4P6⋆

The Triphosphide (tBu3Si)2P3Na: Formation, X-ray and Ab initio Structure Analyses, Protonation and Oxidation to Triphosphane (tBu3Si)2P3H and Hexaphosphanes (tBu3Si)4P6⋆

Tetrasupersilyl-tristannaallene and -tristannacyclopropene (tBu3Si)4Sn3 – Isomers with the Shortest Sn=Sn Double Bonds to Date

Lithium-, Natrium- und Kupfer(I)-supersilylphosphandiide M2PSitBu3: Verbindungen mit neuartigen sphärischen (M2P)n-Gerüsten

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