The germanium-hydrogen bond dissociation energies of organogermanes. A laser-induced photoacoustic study

Autor:	David Griller, K. Brady Clark
Rok vydání:	1991
Předmět:	Radical Organic Chemistry Photodissociation chemistry.chemical_element Germanium Photochemistry Hydrogen atom abstraction Dissociation (chemistry) Inorganic Chemistry chemistry.chemical_compound Reaction rate constant chemistry Germane Flash photolysis Physical and Theoretical Chemistry
Zdroj:	Organometallics. 10:746-750
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om00049a039
Popis:	The Ge-H bond dissociation energies (BDE's) of several alkyl- and aryl-substituted germanium hydrides have been measured in hydrocarbon solution at room temperature by a photoacoustic technique. In an effort to further characterize the formation, spectral and decay properties on the germyl radicals some laser flash photolysis studies were carried out. The rate constants for hydrogen abstraction by tert-butoxy radicals were determined by nanosecond laser flash photolysis and fell in the range (0.7-4.4)×10 8 M −1 s −1 . The aryl-substituted germyl radicals add to the aromatic rings of the germane precursor. Diphenylgermyl radical adds to diphenylgermane with a rate constant of 2.9×10 5 M −1 s −1 , while phenylgermyl radical adds to phenylgermane with a rate constant of 1.2×10 6 M −1 s −1
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f5a7fcc7afb53a7cbdf9005d94f493cb https://doi.org/10.1021/om00049a039 Zobrazit plný text záznamu