Protecting polyynes
نویسندگان
چکیده
منابع مشابه
Toward carbyne: Synthesis and stability of really long polyynes*
Molecules composed of sp-hybridized carbon chains (polyynes) are the simplest of the known conjugated organic oligomers. In comparison to their counterparts such as polyacetylene and polydiacetylene, however, the formation of polyynes has traditionally posed a difficult synthetic challenge. In particular, there is no reliable method to form end-capped polyethynylene, and monodisperse polyynes h...
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متن کاملPolyynes as a model for carbyne: synthesis, physical properties, and nonlinear optical response.
With the Fritsch-Buttenberg-Wiechell rearrangement as a primary synthetic route, a series of conjugated, triisopropylsilyl end-capped polyynes containing 2-10 acetylene units has been assembled. In a few steps, significant quantities of the polyynes are made available, which allow for a thorough analysis of their structural, physical, and optical properties. Molecules in the series have been ch...
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Conjugated polyynes are a class of species of diverse and increasing interest. Length-scrambling and substituent scrambling reaction energies were examined using ab initio quantum chemistry calculations to investigate issues concerning the energetic effects of the molecular ends (substituent communication). Computations were performed for the parent, monohalogenated, and dihalogenated (F, Cl, B...
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ژورنال
عنوان ژورنال: Nature Chemistry
سال: 2012
ISSN: 1755-4330,1755-4349
DOI: 10.1038/nchem.1424