Abstract
A series of novel α-(N-pentafluorophenylamino)benzyl phosphonic acids are prepared by hydrolysis of corresponding phosphonates, C6F5NHCH(Ar)P(O)(OR)2 which are synthesized from the addition of N-pentafluorophenyl aromatic aldimines with dialkyl phosphite. The X-ray diffraction of C6F5NHCH(4-CH3C6H4)P(O)(OCH3), is presented.