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- W2035702563 abstract "Natural abundance 17O NMR chemical shift data for seven substituted indanones including four hydroxyindanones, three fluorenones including two hydroxyfluorenones, and seven 2-methyleneindanones including four hydroxymethyleneindanones, at 75°C in acetonitrile are reported. The hydroxyindanones, the one hydroxyfluorenone and the hydroxymethyleneindanones capable of intramolecular hydrogen bonding exhibit carbonyl 17O NMR signals which are shielded relative to those incapable of intramolecular hydrogen bonding. The intramolecular hydrogen bonding component (ΔδHB) of the carbonyl 17O NMR chemical shift was determined to be 9.8 ± 1.2 and 10.9 ± 1.4 ppm for the hydroxyindanones and the hydroxymethyleneindanones, respectively. The small ΔδHB values for these hydroxyindanones relative to other ketone systems (about 50 ppm) are discussed in terms of molecular mechanics calculated hydrogen bond geometry." @default.
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- W2035702563 date "1993-10-01" @default.
- W2035702563 modified "2023-09-26" @default.
- W2035702563 title "17O NMR spectroscopy: intramolecular hydrogen bonding in 7-hydroxyindanones" @default.
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- W2035702563 doi "https://doi.org/10.1016/0022-2860(93)80213-f" @default.
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