Silyl arsines

Arsine, o-phenylenebis(dimethylaminopropyl-, 2,1007 Arsine, o-phenylenebis(methylphenyl-, 2,1006 Arsine, silyl-, 3, 239 Arsine, tributyl-, 2, 1006 Arsine, triethyl-, 2, 1006... 

These precursors are generally prepared by alkane elimination (Equation (7a)) or—especially useful with bulkier substituents—the coupling of metal chlorides with lithium pnictides or silyl arsines (Equation (7b)) or salt elimination or silyl halide elimination reactions (Equation (7c)) ... 

The reaction of toluene solutions of indium trichloride and tris(trimethylsilyl)arsine resulted in the formation of a very fine dark-brown powder subsequently annealed up to 400°C to drive to completion the elimination of trimethyl-silyl-chloride. Nanocrystalline InAs was obtained. Similar reactions with InBr3 and Inl3 and P compounds have been discussed. Previously a similar reaction was described by Uchida et al. (1993) (reaction of indium acetylacetonate with tris(trimethylsilyl)arsine in refluxing triglyme). Subsequently the reaction with InCl3 was used by Guzelian et al. (1996) in the preparation of nano-crystal quantum dots. They compared different preparation methods and techniques useful to isolate specific size distributions. 

Here the fragment pattern is the same as before but the condensation reaction is of inverse polarity. Oxazolium ions or zwitterionic munchnones contribute the CNCC chain and tris(trimethyl-silyl)phosphine/arsine contributes the fifth ring member. 

As in the case of monocyclic 1,3-azaphospholes/arsoles (Section 3.16.4.1.4) tris(trimethyl-silyl)phosphine/arsine provides the phosphorus/arsenic ring member by replacing the oxygen atom of an oxazolium ring. 

Silyl arsines are normally made from alkali metal arsenides and the chlorosilane. However the first ones to be prepared, (Ph3Si)2AsMe, Ph3SiAsMe2 and Ph3SiAsEt2, were obtained from the coupling of triphenylsilyl lithium and the bromoarsine103. They are... 

The silyl substituted dithiol (Mc3SiSCF2)2, prepared from the sulphenyl chloride CISC2F4SCI (4) and (Mc3Si)2Hg, reacts with the dichlorides RECI2 (E = P, As) to give the heterocycle, the phosphorus derivative undergoing a Michaelis-Arbuzov rearrangement, but not the arsenic one (equation 12). These heterocycles also result directly from (4) and the bis-silyl phosphine or arsine. ... 

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