Silyl-nitrogen compounds

Vasisht, Sham Kumar; Sood, M.; Sood, Nirupma; Singh, Gursharan

doi:10.1016/0022-328x(86)82052-6

Cited by 11 publications

(3 citation statements)

References 19 publications

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“…Oligomerization of “(C 5 Me 5 ) 2 La(CN)” and coordination of excess Me 3 SiCN would form 4 . (Me 3 Si) 2 NNC was not isolated from this reaction, but a reaction prepared in C 6 D 6 and monitored by 1 H NMR spectroscopy suggested that a related species might form since a resonance was observed at 0.76 ppm, which is close to that reported for (Me 3 Si) 2 NNC (0.70 ppm). , …”

Section: Addition Of Lewis Bases To the Isocyanotrimethylsilyl Amide ...supporting

confidence: 69%

“…(Me 3 Si) 2 NNC was not isolated from this reaction, but a reaction prepared in C 6 D 6 and monitored by 1 H NMR spectroscopy suggested that a related species might form since a resonance was observed at 0.76 ppm, which is close to that reported for (Me 3 Si) 2 NNC (0.70 ppm). 29,30 Me 3 SiCH 2 NC. The reactivity of 1-La with isocyanides was examined since it has been previously reported that the C-metalated diazoalkane complex Rh(PEt 3 ) 3 [C(SiMe 3 )N 2 ] 31 reacts with isocyanides, RNtC (R ) t Bu, n Bu), to produce the corresponding 1,2,3-triazolato complexes (PEt 3 ) 3-n (RNC) n Rh-[CC(SiMe 3 )N 2 N(R)] (R ) t Bu, n ) 2; R ) n Bu, n ) 1) by 1,3-dipolar cycloaddition, eq 7.…”

Section: Structures Of the Isocyanotrimethylsilyl Amides 1-lnmentioning

confidence: 99%

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Synthetic Diversity in the Formation of Triazoles from Nitriles and Diazo Compounds Using Metallocenes of Electropositive Metals

et al. 2009

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Reactions of [(C 5 Me 5 ) 2 Ln][(µ-Ph) 2 BPh 2 ] complexes with Li[Me 3 SiCN 2 ] form dimeric isocyanotrimethylsilyl amide complexes {(C 5 Me 5 ) 2 Ln[µ-N(SiMe 3 )NC]} 2 , not only for Ln ) Sm (1-Sm) and La (1-La) but also for the intermediate and small size metal ions Ln ) Nd, Y, Yb, and Lu. Complexes 1-Y and 1-Yb were characterized by X-ray crystallography and are structurally similar to 1-Sm and 1-La. A more convenient synthesis of 1-Sm and 1-La from the corresponding (C 5 Me 5 ) 2 LnCl 2 K(THF) 2 "ate" salts with Li[Me 3 SiCN 2 ] is also reported. Analogues of reactions of 1-Sm and 1-La with Me 3 CCN that form the 1,2,3-triazolato complexes (C 5 Me 5 ) 2 Ln(NCCMe 3 )[NNC(SiMe 3 )C(CMe 3 )N] (2-Sm, 2-La) were examined with C 6 H 5 CH 2 CN and Me 3 SiCN to investigate the diversity of the triazoles accessible by this route. Complex 1-La reacts with C 6 H 5 CH 2 CN to make a 1,2,3-triazole complex, but in contrast to 2-La, the product is a base-free dimer in which each triazole is ligated by two metallocenes, {(C 5 Me 5 ) 2 La[µ-3. The reaction of 1-La with Me 3 SiCN involves Si-C bond cleavage, and a nitrile-solvated cyanide trimer, [(C 5 Me 5 ) 2 La(µ-CN)(NCSiMe 3 )] 3 , 4, was isolated. The reaction of 1-La with the isocyanide reagent Me 3 SiCH 2 NC also generated a cyanide trimer, this time via N-C bond cleavage as an isocyanide solvate, [(C 5 Me 5 ) 2 La(µ-CN)(Me 3 SiCH 2 NC)] 3 , 5. Unsubstituted 1,2,3-triazoles {(C 5 Me 5 ) 2 Ln[µ-η 1 :η 2 -NNC(SiMe 3 )C(H)N]} 2 (6-Sm, 6-La) can be isolated directly from 1-Sm and 1-La in reactions that involve N-N bond cleavage.

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Section: Addition Of Lewis Bases To the Isocyanotrimethylsilyl Amide ...supporting

confidence: 69%

Section: Structures Of the Isocyanotrimethylsilyl Amides 1-lnmentioning

confidence: 99%

Synthetic Diversity in the Formation of Triazoles from Nitriles and Diazo Compounds Using Metallocenes of Electropositive Metals

et al. 2009

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“…Bis(trimethylsilyl)hydrazine, 1 [1] is a very stable model compound of hydrazine. Lithiumbis(trimethylsilyl)hydrazine, 1a [2] and dilithiumbis(trimethylsilyl)hydrazine, 1b [3] have attracted the attention as model compounds of highly reactive LiN 2 H 3 and Li 2 N 2 H 2 and their synthesis [4][5][6] and chemical reactions [3,5,6] have also been reported. If the lithium atom of lithiumbis(trimethylsilyl)hydrazine, 1a, is substituted by an -SnR 3 group, the resulting (trialkylstannyl)bis(trimethylsilyl)hydrazine, 2, would be endowed with two differentially reactive N-H and N-Sn bonds.…”

Section: Introductionmentioning

confidence: 99%