Journal of Molecular Structure p. 85 - 100 (1984)
Update date:2022-08-05
Topics:
Lumbroso, H
Liegeois, Ch.
Pappalardo, G. C.
Andrieu, C. G.
Exmination of the electric dipole moments of 2-benzoylpyrrole and di-(2-pyrryl)-ketone, and of their sulfur analogues, measured in cyclohexane and/or carbon tetrachloride, benzene and dioxane, allows their preferred conformations in these media to be determined. 2-Benzoyl-N-methylpyrrole and di-(2-N-methylpyrryl)ketone and the corresponding thioketones, were examined in benzene and their conformations elucidated.The dipole moments of retained conformers were all deduced from that of the closed-ring 1,1'-methylene-2,2'-dipyrrylketone.Di-(2-pyrryl)ketone and di-(2-pyrryl)thioketone uniplanar conformers were examined by the CNDO/2 technique.Further, the factors that determine the preferred conformations of these compounds were discussed briefly.
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