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- W2138013690 abstract "The structure and synthesis of the overcrowded polynuclear aromatic 1, 6, 7, 10-tetramethylfluoranthene, 1, is presented. The structures of 1 and 11 have been determined by X-ray diffraction to be twisted into conformations of approximately C2 symmetry due to the buttressing of the flanking methyl groups. Semi-empirical calculations (AM1) on 1 find two minima, twist and fold; the twist is of lower energy. The energy for enantiomerization of 1 is set at below 7.0 kcal/mol by variable temperature NMR. Computations predict a likely path to account for the ribbon twist." @default.
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- W2138013690 date "1993-01-01" @default.
- W2138013690 modified "2023-09-23" @default.
- W2138013690 title "1,6,7,10-Tetramethylfluoranthene: Synthesis and structure of a twisted polynuclear aromatic hydrocarbon." @default.
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- W2138013690 doi "https://doi.org/10.1016/s0040-4039(00)60565-8" @default.
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