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13C NMR Chemical Shifts. A Single Rule To Determine the Conformation of Calixarenes
Jaime, Carlos,Mendoza, Javier de,Prados, Pilar,Nieto, Pedro M.,Sanchez, Concha
, p. 3372 - 3376 (1991)
The conformations of calixarenes can be deduced from the 13C NMR chemical shift of the methylene groups connecting each pair of aromatic rings.Inspection of 24 cases revealed that when the phenol rings beside each methylene are in a syn orientation (i.
