The Perchlorinated Silanes Si2Cl6 and Si3Cl8 as Sources of SiCl2 (pages 4715–4719)
Dipl.-Chem. Frank Meyer-Wegner, Dipl.-Chem. Andor Nadj, Dr. Michael Bolte, Prof. Dr. Norbert Auner, Prof. Dr. Matthias Wagner, Prof. Dr. Max C. Holthausen and Dr. Hans-Wolfram Lerner
Article first published online: 21 MAR 2011 | DOI: 10.1002/chem.201003654
Trapped in action: The amine-induced disproportionation of Si2Cl6 or Si3Cl8 to neo-Si5Cl12 and SiCl4 involves a SiCl2–base adduct as a key intermediate (see scheme). Direct evidence from low-temperature 1H/29Si HETCOR NMR and trapping experiments with dimethylbutadiene together with detailed mechanistic information derived from theory provide a clear view on the principles of this intriguing reactivity.