Macrotricyclic Quaternary Ammonium Salts
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Dr. Franz P. Schmidtchen
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Article
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1981
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John Wiley and Sons
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English
β 326 KB
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close to zero in (1) but strongly negative in (2). By integration, the electron-density deficit on the Li atom in ( ) is estimated to be about 0.5-0.6 electrons. Thus, from the electron-density difference maps, 2-lithio-2-methyldithiane would seem to have a covalent, at most polarized, Li-C bond, wh