  Two-dimensional 1H-15N HMBC NMR spectra of a well-known
anticonvulsant-carbamazepine-dissolved in chloroform, recorded on an NMR
spectrometer and obtained from quantum-chemical calculations prove the
existence of hidden conformers in saturated solutions. A weaker influence of
ring currents was revealed for the hidden conformation of carbamazepine
dissolved in saturated solution, which provides a simple approach for
discovering hidden conformations. Hidden conformers were found in three
different solvents: dimethyl sulfoxide, chloroform, and dichloromethane.
