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单词 tropylium
释义 tropylium Chem.|trəˈpɪlɪəm|
[f. tropolone + -yl + -ium.]
The cation C7H7+ consisting of a ring of seven {b2}CH{b1} groups. Usu. attrib.
1954Jrnl. Amer. Chem. Soc. LXXVI. 3204/2 The value..indicates that the tropylium ion is about as strongly acidic as acetic acid when water is the reference base.1982T. W. G. Solomons Fund. Org. Chem. xi. 375 Tropylium bromide, C7H7Br, is insoluble in nonpolar solvents but dissolves readily in water.
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