87655-66-1Relevant academic research and scientific papers
Clathrate Formers with Allene Structure - Host Compounds, Crystal Inclusion and Structure of a Dioxane Clathrate
Weber, Edwin,Seichter, Wilhelm,Goldberg, Israel
, p. 811 - 820 (2007/10/02)
The tetraaryl-substituted allenes 1-8 are synthesized, and their properties in crystal inclusion are determined.Dependent on the type and number of the substituents, host compounds result, which have different inclusion properties and clathrate selectivities.Host 1h forms inclusion compounds with a wide range of apolar and relatively polar cyclic guest solvents (26 inclusions altogether), while 2, 4, 5, and 7b form only one or two inclusions.In two-component solvent systems, high inclusion selectivities are found for the host compounds.The crystal structure of the4*dioxane (1:1) clathrate is reported.Relations between structure and inclusion selectivity are discussed.
Preparation and Characterization of Some Pentaarylethyls
Smith, William B.,Harris, Michael C.
, p. 4957 - 4962 (2007/10/02)
The reaction of triphenylmethylsodium with dichlorodiphenylmethane does not give pentaphenylethyl as previously reported, but when the anion reacts with 9,9-dichlorofluorene, it does form the reported 9-tritylfluorenyl radical which has been characterized by ESR spectroscopy.The radical is better prepared by oxidation of the anion of 9-tritylfluorene.The 9-tritylfluorenyl radical reacts with traces of oxygen to give triphenylmethyl and fluorenone.With light it forms triphenylmethyl and fluorenylidene.The latter was established by photolyzing 9-diazofluorene in the presence of triphenylmethyl with the generation of 9-tritylfluorenyl.Small yields of the persistent pentakis(p-tert-butylphenyl)ethyl radical have been prepared, and it is propable that pentaphenylethyl has also.
