Substituent Effects in Cross-Conjugated Systems
نویسندگان
چکیده
منابع مشابه
Quantum interference in acyclic systems: conductance of cross-conjugated molecules.
We calculate that significant quantum interference effects can be observed in elastic electron transport through acyclic molecules. Interference features are evident in the transmission characteristics calculated for cross-conjugated molecules; significantly, these effects dominate the experimentally observable conduction range. The unusual transport characteristics of these molecules are highl...
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Various cross-conjugated enediynes undergo "Bergman-type" cycloaromatizations upon reduction with potassium metal, generating anions of fulvenes and fulvalene derivatives. This new anionic cyclization is considerably more facile than the classic Bergman cyclization with linear enediynes, creating highly reactive diradicals at -78 degrees C. Not all cross-conjugated enediynes yield cyclized dian...
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where R = H and/or alkyl (aryl). Presence of electron-releasing substituents on alkene double bond increases the rate of oxythallation it is in accordance with Ads character of this reaction [2-5]. In earlier papers of this series we showed that oxidation of alkenes by an aqueous solution of thallic salts suits Taft's equation, and isokinetic relationship, too [6-8]. We studied the enthalpy ent...
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ژورنال
عنوان ژورنال: Journal of Computer Chemistry, Japan
سال: 2016
ISSN: 1347-1767,1347-3824
DOI: 10.2477/jccj.2016-0036