Where does that strange coupling pattern in 13C-NMR come from?

Hello, I synthesized (HO)2P(O)CH2CH2P(O)(OH)2 and made NMR analysis. 1H and 31P are very good. 13C gives me a strange pattern, though. There is a publication about the Methylester, they also...

06 March 2017 3,886 10 View