Two chiral phosphoramidates, (R)-(-)-1,1'-binaphthyl-2,2'-dihydroxy-N-[alph
a-(S)-methylbenzyl]phosphoramidate and (-)-1,1'-biphenyl-2,2'-dihydroxy-N-[
alpha-(S)-methylbenzyl]phosphoramidate were synthesized. Their crystal stru
ctures were determined by X-ray single crystal diffraction analysis. The ph
osphoramidate molecules are self-associated by intermolecular N-H ... O=P h
ydrogen bonds and aromatic edge to face interactions.