Room temperature observation of GeH2 and the first time-resolved study of some of its reactions

✍ Scribed by R. Becerra; S.E. Boganov; M.P. Egorov; O.M. Nefedov; R. Walsh

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 576 KB
• Volume: 260
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(96)00855-x

✦ Synopsis

Using a laser flash photolysis/laser probe technique, applied to two different gaseous precursor moleculeS, we report absorption signals in the wavenumber region 17109-17120 cm -~, attributable to previously unobserved rotational transitions in the vibronic spectrum of GeH 2. By time-resolved monitoring of GeH 2, rate constants have been Obtained for its reactions with 0 2, C2H 2, i-C4H 8, 1,3-C4H 6, C3H 8 and Me3SiH. The measurements show that GeH 2 i~ unreactive towards C-H bonds but inserts readily in Si-H bonds, as well as reacting rapidly (close to the collision rate), wi!h T-bonds. These results represent the first direct kinetic measurements on GeH 2. Comparisons show that it is slightly less reactive than Sill 2.