N-H•••N hydrogen bonding in the four independent molecules of (2S,4S,5R)(-)-2-(1H-imidazol-2-yl)-3,4-dimethyl-5-phenyl-1,3-oxazolidine, with C-H•••πarene, C-H•••O and C-H•••πC=C interactions

The title compound, C14H17N3O, prepared from (1R,2S)-(-)-ephedrine, crystallizes in space group P2(1) with four molecules in the asymmetric unit, The molecules, in pairs, take part in intermolecular N-H ... N hydrogen bonding between the imidazolyl rings, forming one-dimensional chains with alternating N ... N distances of 2.866(3)/2.883(3) and 2.945(3)/2.956(3) Angstrom. Inter-chain C-arene-H ...pi(arene), C-arene-H ... O and C-sp3-H ...pi(C=C) interactions generate a three-dimensional network.