Crystal and Molecular Structures of the Salts of Diethylenetriamine with Two Organic Acids

Two crystalline organic salts of diethylenetriamine (L): with 2,4,6-trinitrophenol (picric acid = Pic), anhydrous [(H2L)(2+)center dot(Pic(-))(2)] (1), and with 3,5-dinitrosalicylic acid (3,5-dns), the hydrate [(H2L)(2+) (3,5-dns)(2-)center dot H2O (2) have been prepared and characterized by X-ray diffraction analysis, IR, and elemental analysis. Both compounds 1 and 2 crystallize in the monoclinic space group P2(1)/c, with Z = 4 in cells with a = 8.729(3) , b = 12.437(4) , c = 20.922(7) , beta = 98.154(4)A(0), V = 2,248.5(13) (3) (for 1) and a = 10.8722(7) , b = 20.5909(19) , c = 6.9758(4) , beta = 94.509(1)A(0), V = 1,556.8(2) (3) (for 2). The supramolecular architectures of both 1 and 2 involve extensive hydrogen bonding including O-H center dot center dot center dot N, N-H center dot center dot center dot O and N-H center dot center dot center dot N interactions as well as other non-covalent C-H center dot center dot center dot pi and pi center dot center dot center dot pi interactions, giving three-dimensional framework structures. The crystal structures of the diethylenetriamine salts with picric acid and 3,5-dinitrosalicylic acid show extensive hydrogen bonding as well as C-H center dot center dot center dot pi and pi center dot center dot center dot pi interections, giving three-dimensional networks.