The variable temperature and concentration 1H, 13C, 31P NMR spectroscopy of the N,N′-bis[diisopropoxy(thio)phosphorylamido-(thio)carbonyl]-1,10-diaza-18- crown-6 containing the reaction pentade C(X)NHP(Y) and stereononrigid ...

Spatial structure of calixarene has been investigated by two-dimensional nuclear magnetic resonance (nuclear Overhauser effect) spectroscopy. Interproton distances for the given compound in solutions of benzene and cyclohexane ...