The Detection of O=SiCl2 as an Intermediate During the Combustion Process of SiCl4 with O2

✍ Scribed by Markus Junker; Andreas Wilkening; Michael Binnewies; Hansgeorg Schnöckel

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 270 KB
• Volume: 1999
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199909)1999:9<1531::aid-ejic1531>3.0.co;2-b

✦ Synopsis

During the technical important combustion of SiCl 4 with calculations the thermodynamic data have been calculated first. On this basis it was possible to find the optimal oxygen [SiCl 4 (g) + O 2 (g) = SiO 2 (s) + 2•Cl 2 (g)] many intermediates have been detected in the past. However, the conditions to trap OSiCl 2 from the high-temperature equilibrium. Furthermore it could be shown via IR presence of the primary species O=SiCl 2 has been discussed controversially until today. With the help of matrix isolation spectroscopy and quantum chemical calculations, that the radical OSiCl does not play a significant role within this technique we have now been successful to monitor O=SiCl 2 via its IR spectrum. With the help of quantum chemical combustion process.

was found. Therefore we tried to detect this molecule via On the basis of the experimental data of Cl 2 (g) and Callinstraße 9, D-30167 Hannover, Germany SiO(g), the ∆H f 0 (298) and S 0 (298) values for OSiCl 2 can