Abstract
Dimethylgermylene (GeMe2) has been generated and studied by laser flash photolysis of 1,1-dimethyl- and 1,1,4-trimethyl-3-phenylgermacyclopent-3-ene (3a and 3b, respectively) in hexane solution, where it exhibits λmax = 470 nm and decays on the microsecond time scale with second-order kinetics. In the absence of scavengers the decay of GeMe2 is accompanied by the growth of absorptions due to tetramethyldigermene (Ge2Me4; λmax = 370 nm), which decays over the next ca. 100 μs. Absolute rate constants for reaction of GeMe2 with several reagents have been determined, including acetic acid, CCl4, oxygen, n-butyl- and triethylamine, a terminal alkene and alkyne, two dienes, and the group 14 trialkylmetallyl hydrides R3MH (M = Si, Ge, Sn; R = Et or n-Bu). The rate constants agree closely with gas-phase values for the same or similar substrates. The data are compared to those for reaction of GePh2 with the same set of reagents, showing GeMe2 to be significantly more reactive than its phenylated analogue in every ...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
