62162-97-4Relevant articles and documents
Miller et al.
, p. 1142 (1977)
Alumina-Mediated π-Activation of Alkynes
Akhmetov, Vladimir,Amsharov, Konstantin,Feofanov, Mikhail,Sharapa, Dmitry I.
supporting information, p. 15420 - 15426 (2021/09/30)
The ability to induce powerful atom-economic transformation of alkynes is the key feature of carbophilic π-Lewis acids such as gold- and platinum-based catalysts. The unique catalytic activity of these compounds in electrophilic activations of alkynes is explained through relativistic effects, enabling efficient orbital overlapping with π-systems. For this reason, it is believed that noble metals are indispensable components in the catalysis of such reactions. In this study, we report that thermally activated γ-Al2O3activates enynes, diynes, and arene-ynes in a manner enabling reactions that were typically assigned to the softest π-Lewis acids, while some were known to be triggered exclusively by gold catalysts. We demonstrate the scope of these transformations and suggest a qualitative explanation of this phenomenon based on the Dewar-Chatt-Duncanson model confirmed by density functional theory calculations.
PROTON-TRANSLOCATING COMPOUND, PROTON-TRANSLOCATING MATERIAL COMPOSITION, ELECTRONIC DEVICE AND PROTON-TRANSLOCATING ELECTROLYTE FILM
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Paragraph 0117, (2016/10/10)
PROBLEM TO BE SOLVED: To provide a proton-translocating compound and a proton-translocating material composition which are capable of maintaining a liquid crystal phase in a wide temperature range and thereby function in a wide temperature range, and various electronic devices using the compound or composition. SOLUTION: The proton-translocating compound is represented by the general formula (1) in the figure. COPYRIGHT: (C)2015,JPOandINPIT
Effects of hindered internal rotation on packing and conductance of self-assembled monolayers
Dameron, Arrelaine A.,Ciszek, Jacob W.,Tour, James M.,Weiss, Paul S.
, p. 16761 - 16767 (2007/10/03)
Self-assembled monolayers of 4-thiobiphenyl and 2-thiophenanthrene molecules on Au{111} were probed using scanning tunneling microscopy (STM) to investigate their assembled order, to measure the conductance through them, and to determine what molecular features are necessary for molecules to exhibit conductance switching. The 4-thiobiphenyl molecules assemble into two distinct packing structures, whereas no order is observed for 2-thiophenanthrene. Both molecules show rectifying behavior, but although 4-thiobiphenyl is more conductive at positive sample biases, 2-thiophenanthrene is more conductive at negative sample bias. Individual molecules of each type were also inserted into alkanethiol SAMs and tracked over several hours to investigate the conductance states of each molecule. Both molecules exhibit two conductance states, indicating that internal ring rotation is not required for conductance switching.
