SILYL-NITROGEN COMPOUNDS,<sup>1</sup> 11: SYNTHESIS AND CHARACTERISATION OF TETRASILAPHOSPHA AND TETRASILA-ARSA TETRAZENES

Vasisht, Sham Kumar; Sood, M.; Verma, Pawan Kumar; Kaur, Tarundeep; Usha, K.

doi:10.1080/10426509008037989

Cited by 17 publications

(7 citation statements)

References 14 publications

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“…In order to determine the nature of the products formed, (1) has been reacted with alkyllithiums Rli followed by treatment of the intermediate with an active halide Me 3 ECl (E = Si, Sn). The signal at δ 11.32 is characteristic of P(V) [2,3,7]. This was needed because of an earlier report on trisilaphosphatriazene (Me 3 Si) 2 N-P=NSiMe 3 [3] suggested the probable intermediacy of an iminophosphoranide derivative.…”

Section: Resultsmentioning

confidence: 99%

“…This is indicative of 4 coordinated pentavalent phosphorus [2,3,7], The 29 Si-NMR (Table 2) of (7a) and (7b) are characteristic of their structures. This is indicative of 4 coordinated pentavalent phosphorus [2,3,7], The 29 Si-NMR (Table 2) of (7a) and (7b) are characteristic of their structures.…”

Section: (7a) (7b)mentioning

confidence: 93%

“…The first isolated inorganic phospha-tetrazene was l,l,2,4-tetrakis(trimethylsilyl)-2-phospha-ltetrazene (Me 3 Si) 2 N-N(SiMe 3 )-P=N(SiMe 3 ), (1) [2], Structural features of (1) indicate that besides others the most important reactions of (1) occur at P(II1) and -P=N-. In order to understand its reactivity and reaction pathways, (1) has been reacted with alkyllithium followed by treatment of the intermediate or the rearranged product with Me 3 ECI (E=Si, Sn).…”

Section: Introductionmentioning

confidence: 99%

“…Monitoring over a weekend indicated the disappearance of the signal at 72.70 ppm and its replacement by a resonance at δ 11.72 indicatings its transformation into iminophosphoranide(6) [2,3,7]. Monitoring over a weekend indicated the disappearance of the signal at 72.70 ppm and its replacement by a resonance at δ 11.72 indicatings its transformation into iminophosphoranide(6) [2,3,7].…”

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Pathway of Addition Reactions in Tetrasila-2-Phospha-1-Tetrazene

Vasisht¹,

Johal²

1999

Main Group Metal Chemistry

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Tetrakis(trimethylsilyl)-2-phospha-l-tetrazene (Me 3 Si)7N-N(SiMe 3 )-P=N(SiMe 3 ), (1) reacts with an alkyllithium RLi (R=Me, Bu) to form the P(IlI)amide (Me 3 Si) 2 N-N(SiMe 3 )-P(R)-N(SiMe 3 )Li which undergoes an intramolecular rearrangement at room temperature to give the imino-phosphoranide (Me 3 Si) 2 N-N(SiMe 3 )-P(R)(Li)=NSiMe·;. The phosphoramide as well as the imino-phosphoranide react with Me 3 ECl (E=Si,Sn) to form the phosphine (Me 3 Si) 2 N-N(SiMe 3 )-P(Me)-N(SiMe 3 )(EMe 3 ) and the phosphorane (Me 3 Si) 2 N-N(SiMe 3 )-P(Bu)(EMe 3 )=N(SiMe 3 ),respectively. The former undergoes a slow rearrangement to form a phosphorane, whereas the latter is stable.

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Section: Resultsmentioning

confidence: 99%

Section: (7a) (7b)mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Pathway of Addition Reactions in Tetrasila-2-Phospha-1-Tetrazene

Vasisht¹,

Johal²

1999

Main Group Metal Chemistry

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“…In the last decades the possibility to generate dicoordinate nitrogen bound arsenic compounds was shown not only for a series of amino(imino)arsanes (I, Scheme 1) but also for non-cyclic and cyclic bis(amino)arsenium ions (II, III). [1][2][3][4][5][6][7] Furthermore, base stabilized mono 8 and di cations of arsenic have been reported. 9 Scheme 1.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a stable non-cyclic bis(amino)arsenium cation

et al. 2018

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The reaction of Li[Mes*NH] (1, Mes* = 2,4,6-tri-tert-butylphenyl) with aminoarsane Mes*N(H)AsCl2 (2, Mes* = 2,4,6-t-Bu3C6H2) at −80 °C resulted in the formation of bisamino(chloro)arsane (Mes*NH)2AsCl (3Cl) by elimination of LiCl. 3Cl reacted with the Lewis acids such as AlCl3, GaCl3, and Ag[X] (X = AsF6−, OTf−, BF4−; OTf = trifluoromethanesulfonate = OSO2CF3−) upon chloride ion abstraction to give salts bearing the cation [(Mes*NH)2As]+ (3[X]; X = AsF6−, OTf−, BF4−, ECl4; E = Al, Ga). 3+ represents the first NH-functionalized acyclic bis(amino)arsenium cation. The formation of the salts bearing 3+ could also be observed in the reaction of cyclo-1,3-diarsa-2,4-diazane [ClAs(μ-NMes*)]2 (4) with Lewis acids (AlCl3, GaCl3) in the presence of proton sources in solution. All presented salts 3[X] were stable at room temperature and fully characterized.

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