Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"alpha-hydrogen"”.
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Tantalum and niobium alkylidene complexes via ligand induced alpha-hydrogen abstraction.
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1979.
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Mechanistic Studies of the Chemical Vapor Deposition of Ceramic and Metal Films From Organometallic Precursors
… conditions. A kinetic isotope effect $(k\sb{\rm\alpha (H)}/k\sb{\rm\alpha (D)} = 5.2 \pm 0.4)$ upon deuterating the alkyl groups at the $\alpha$ positions provides clear evidence that the initial step in the thermolysis is an $\alpha$-hydrogen elimination reaction to form neopentane. The …
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Block Copolymer Formation by Transformation Reactions
… the metallocarbene initiator is formed by an alpha hydrogen migration from the cocatalyst to the transition metal catalyst; the reaction is believed to be covalent rather than ionic. Work performed at PERME Waltham Abbey has shown the possibility of synthesising substituted amines of the form …
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Development of advanced algorithms to detect, characterize and forecast solar activities
… feature on the bright solar disk in H[alpha] (Hydrogen-alpha) full-disk solar images. In this dissertation, an automatic solar filament detection and characterization method is presented. The investigation illustrates that the statistical distribution of the Laplacian filter responses …