An X-Ray Crystallographic Study of the Novel Aminal bis-(p-Ethoxycarbonylphenylamino-)methane

The crystal structure of bis-( p -Ethoxycarbonylphenylamino-)methane ( 1 ) has been determined by single crystal X-ray diffraction analysis. The bis-aminal ( 1 ) molecule is V-shaped and situated on a twofold axis passing through C1 with the phenyl rings forming a dihedral angle of 70.2(1)°. The carboxylate and phenyl groups are coplanar. The crystal structure of 1 is compared with the structure of the closely related aminals, 2 – 5 . Crystal data: 1 C 19 H 22 N 2 O 4 , tetragonal, space group I4 1 cd (N.110), a = 20.4760(7) Ǻ, b = 20.4760(7) Ǻ, c = 8.2984(3) Å, and V = 3477.7(2) Å 3 , for Ζ = 8. Index Abstract The crystal structure of bis-( p -ethoxycarbonylphenylamino-)methane ( 1 ) has been determined by single crystal X-ray diffraction analysis.