Synthese stabiler Alkantellurenyl‐pseudohalogenide und ‐pseudochalkogenide: (Me₃Si)₃CTeX (X=–CN, – SCN, – SeCN, – NCO, – N₃) und (Me₃Si)₃CTe–Y–TeC(SiMe₃)₃ (Y=– NCN–, – NSN–)

Abstract

The first stable and isolable alkanetellurenyl pseudohalides with the silver or potassium salts of the respective pseudoand pseudochalcogenides, tris(trimethylsily1)methanetellu-halides or pseudochalcogenides. 2-6Wegen der problematischen Handhabung von AgNs wird empfohlen, 6 durch Umsetzung von Tris(trimethylsily1)methantellurensaure-ethylester') mit Trimethylsilylazid darzustellen.Die Verbindungen Bis[tris(trimethylsilyl)methyltelluro]-carbodiimid (7) und -schwefeldiimid (8) wurden analog durch Umsetzung von 1 mit Ag,NCN bzw. KzNSN erhalten.

Reactions of tellurium halides with sulfur N,N'-bis(trimethylsilyl)diimide-preparation of the first fluorotellurium nitride

“…2), a = 8.848 (2) Á, b = 10.040 (3) Á, c = 12.598 (3) A, a = 69. 15 (1)°, ß = 82.99 (2)°, y = 68.73 (1)°, V = 974.6 (4) A3, Z = 2, pMlcd = 2.700 Mg m"3, µ = 4.83 mm"1, crystal dimensions 0.2 X 0.3 X 0.4 mm. The X-ray structure determination was carried out on a Stoe-Siemens four-circle diffractometer with graphitemonochromated Mo Ka radiation ( = 0.71073 A).…”

Intramolecularly Group 15 Stabilized Aryltellurenyl Halides and Triflates

“…The use of a bulkier aromatic substituent led to the isolation of the mixed-valent tellurenyl halides (2,6-Mes 2 C 6 H 3 )­TeTeX 2 (2,6-Mes 2 C 6 H 3 ) (X = Cl, Br) and the monomeric (2,6-Mes 2 C 6 H 3 )­TeI . Monomeric aryltellurenyl (pseudo)­halides have also been stabilized by bulky organic substituents such as o -C 6 H 5 C 6 H 4 , 2,4,6- i -Pr 3 C 6 H 2 , 2,4,6- t -Bu 3 C 6 H 2 , − and (Me 3 Si) 3 C. , A different approach in the stabilization of aryltellurenyl­(II) halides is the use of intramolecularly coordinating σ-donor groups. Among others, the aryltellurenyl chloride [8-Me 2 N-Nap-1-Te]Cl ( V ), containing the σ-donating nitrogen atom in a peri position of the naphthyl moiety, possesses a very short peri -N–Te distance of 2.350(3) Å (Chart ).…”

Polyazide Chemistry: Preparation and Characterization of Te(N3)4 and [P(C6H5)4]2[Te(N3)6] and Evidence for [N(CH3)4][Te(N3)5]

“…It is, therefore, not surprising that polyazides are highly endothermic compounds, and that their energy content increases with an increasing number of azido ligands. Compared to the relatively stable azide anion, which possesses two double bonds, the bonds in covalent azides are polarized towards a single and a triple bond, which greatly facilitates N 2 elimination and enhances their shock sensitivity.Consequently, the synthesis and characterization of covalent binary azides containing multiple azido ligands can present great experimental challenges, and binary tellurium azides are no exception to this general rule.Whereas numerous, partially azide-substituted tellurium compounds have been reported, [1][2][3][4][5][6][7][8][9][10][11][12][13][14] only one binary tellurium azide, the [Te(N 3 ) 3 ] + ion, has previously been reported. [5] In this paper, we wish to communicate the synthesis and characterization of three novel binary tellurium azides, In the presence of catalytic amounts of CsF, the reaction of TeF 6 with excess (CH 3 ) 3 SiN 3 in acetonitrile solution at room temperature results in the reduction of Te VI to Te IV , while the azide ion is oxidized to dinitrogen.…”

“…Whereas numerous, partially azide-substituted tellurium compounds have been reported, [1][2][3][4][5][6][7][8][9][10][11][12][13][14] only one binary tellurium azide, the [Te(N 3 ) 3 ] + ion, has previously been reported. [5] In this paper, we wish to communicate the synthesis and characterization of three novel binary tellurium azides, In the presence of catalytic amounts of CsF, the reaction of TeF 6 with excess (CH 3 ) 3 SiN 3 in acetonitrile solution at room temperature results in the reduction of Te VI to Te IV , while the azide ion is oxidized to dinitrogen.…”