L. E. Gusel'nikov, V. Volkova, V. G. Avakyan
Nov 18, 1980
Citations
0
Influential Citations
28
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract The pyrolysis products of 1,1-dimethyl-1-silacyclobutane (DMSCB) and 1,1,3-trimethyl-1-silacyclobutane (TMSCB), and also of the Si-deuteriomethyl analogs (DMSCB-d6 and TMSCB-d6) isolated in argon matrices at 10 K have been studied by IR spectroscopy. Pyrolysis of DMSCB and TMSCB gives rise to an identical set of bands: 644, 696, 817, 824, 932, 992, 1001 and 1253 cm-1 which permanently vanish with the increase in temperature. Correspondingly, the bands at 543, 580, 683, 718, 722, 768, 891, 929, 985 and 1012 cm-1 are observed in the spectra of pyrolysis products of DMSCB-d6 and TMSCB-d6. The appearance of an identical set of bands is attributed to 1,1-dimethyl-1-silaethylene (DMSE) isolated in the argon matrix, but in the case of deuterio analogs, to DMSE-d6. Based on normal coordinate treatment, the above mentioned bands have been preliminary assigned to certain modes of vibrations of DMSE and DMSE-d6.