17.下列何者為使用dimethyl sulfoxide-d6為溶劑所測得之氫核..-阿摩線上測驗
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Ching-Ju 國二下 (2016/07/17)
dimethyl sulfoxide-d6:六個重氫化dimethyl sulfoxide-d5:只有五個重氫化(不純物)DMSO: solvent residual peak is found at 2.50 ppm. It is due to the DMSO-d5 residue and is a quintet, because of hydrogen-deuterium coupling. This is based on the generalized 2nI + 1 rule for spin-spin co.....看完整詳解 |
20F
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22F
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