Friday, September 8, 2017

organic chemistry - CH2 group in alkyl glucoside gives two separate HNMR signals


NMR Spectrum


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It seems like the CH2 next to the sugar gives two different NMR signals which is very interesting. Could someone explain me why?




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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

Apparently the of last four, $\ce{Mg^2+}$ is closest in radius to $\ce{Li+}$. Is this true, and if so, why would a whole larger shell ($\ce{...