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hxsjh

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[½»Á÷] ÇóÖúµÂÓï·­ÒëÖÁÖÐÎÄ

kann man  oberhalb der Koaleszenztemperatur   äquatoriale    und  axiale  Protonen  im  NMR-Spektrum  nicht  getrennt  nachweisen.
Als Folge der starren Sesselkonformation  der Dioxanringe  besitzen  die  1,  5, 7 und  11 Atome  zwei  Paare    nichtäquivalenter     äquatorialer     Protonen A und B.
weil die Signale  von  H1 und H2  zusammenfallen.
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[ Last edited by hxsjh on 2011-1-5 at 03:09 ]

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chengxw413

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deyu shi zheyangde ya!
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