542-91-6 Usage
Description
Diethylsilane is a reagent used in the chemical vapor deposition of SiO2 for microelectronics. It is also used as a precursor to prepare (3-allylsulfanyl-propyl)-diethyl-silane by using (Ph3P)3RhCl as reagent. It can also be used as a reductant in catalytic reduction of secondary amides to imines and secondary amines has been achieved using readily available iridium catalysts such as [Ir(COE)2Cl]2. This system requires low catalyst loading and shows high efficiency and an appreciable level of functional group tolerance. As a reduction agent, it also be used to convert polycarboxylic acids into their corresponding alkanes.
Sources
Levy, R. A., J. M. Grow, and G. S. Chakravarthy. "Low-pressure chemical vapor deposition of silicon dioxide using diethylsilane." Cheminform 24.28(1993):851-854.
https://www.alfa.com/en/catalog/L16468/
https://www.sigmaaldrich.com/catalog/product/aldrich/423815?lang=en®ion=US
https://pubs.acs.org/doi/full/10.1021/ja304547s#citing
Nimmagadda, Rama D., and C. Mcrae. Cheminform 37.35(2006):3505-3508.
Uses
Diethylsilane is used as a precursor to prepare (3-allylsulfanyl-propyl)-diethyl-silane by using (Ph3P)3RhCl as reagent. It is also used in the chemical vapor deposition of SiO2 for microelectronics.
Application
Used in the ‘in-situ’ preparation of diborane and haloboranes.
Check Digit Verification of cas no
The CAS Registry Mumber 542-91-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,4 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 542-91:
(5*5)+(4*4)+(3*2)+(2*9)+(1*1)=66
66 % 10 = 6
So 542-91-6 is a valid CAS Registry Number.
InChI:InChI=1/C4H10Si/c1-3-5-4-2/h3-4H2,1-2H3
542-91-6Relevant articles and documents
Matsuura et al.
, p. 13,14, 15, 19, 21, 23 (1979)
Synthesis of the first persilylated ammonium ion, [(Me3Si) 3NSi(H)Me2]+, by silylium-catalyzed methyl/hydrogen exchange reactions
Labbow, Rene,Reiss, Fabian,Schulz, Axel,Villinger, Alexander
supporting information, p. 3223 - 3226 (2014/08/05)
This work describes the unexpected synthesis and characterization of the first persilylated ammonium ion, [(Me3Si)3NSi(H)Me 2]+, in the reaction of (Me3Si)3N with [Me3Si-H-SiMe3][B(C6F5) 4]. NMR and Raman studies revealed a transition-metal-free silylium ion catalyzed substituent redistribution process when [Me3Si-H- SiMe3]+ was used as the silylating reagent. These observations were affirmed in the reaction with [Et3Si-H-SiEt 3][B(C6F5)4]. A Lewis acid catalyzed scrambling process always occurs if an excess of silanes is present in the formation of silylium cations while employing the standard Bartlett-Schneider- Condon type reaction. Additionally, the thermodynamics of this process was accessed by DFT computations at the pbe1pbe/aug-cc-pVDZ level, indicating alkyl substituent exchange equilibria at the silane and preference of the formation of [(Me3Si)3NSi(H)Me2]+ over [(Me 3Si)4N]+.
Ion-molecule reactions of monosubstituted ethylsilylium ions with trimethyl(tert-butylamino)silane in the gas phase
Kochina,Shchukin,Nefedov,Sinotova
, p. 1233 - 1236 (2007/10/03)
Reaction of nuclear-chemically generated ethylsilylium ions with trimethyl(rert-butylamino)silane in the gas phase was studied. In the course of reaction the ethylsilylium ion completely isomerizes into the dimethylsilylium ion. Experiments show that the pathway involving proton transfer practically is not realized, in contrast to the reactions of carbenium ions with amines.
