An approach to the design of molecular solids. The ureylenedicarboxylic acids

摘要: The crystal structures of a series ureylenedicarboxylic acids have been determined as part project directed toward the design molecular solids. were chosen for study because they predicted to form two-dimensional hydrogen-bonded network. This network is result two orthogonal linear arrays self-complementary functionalities, dicarboxylic and N,N{prime}-disubstituted ureas, being present in same molecule. simplest molecules series, 2,2{prime}-ureylenediacetic acid (1), 3,3{prime}-ureylenedipropionic (2), 4,4{prime}-ureylenedibutyric (3) well ureylene derived from dipeptide, N,N{prime}-carbonylbisglycylglycine (4) synthesized studied by using x-ray crystallographic techniques. Each molecule was found crystallize give solid-state structure.