metal-organic compounds
Open access
The title compound (C16H22N2O6)[PtCl4]·2H2O, shows antiproliferative activity in eight tumor cell lines. The asymmetric unit consists of one solvent water molecule on a general position, and one half of each of the polyammonium cation and the tetrachloridoplatinate(II) anion, both of them located on centers of inversion. In the crystal, the cations are connected via hydrogen bonding between the carbonyl O atoms and the hydroxyl H atoms into zigzag chains that elongate in the c-axis direction. In addition, the carbonyl O atom is hydrogen-bonded to the water molecule which, in turn, interacts with the [PtCl4]2− anion. Finally, the chains are linked by N—H+Cl interactions into a three-dimensional network.
organic compounds
Open access
In the title hydrated salt, C36H66N8O6+·6ClO4−·1.5H2O, the asymmetric unit consists of a hexaprotonated [H6L]6+ cation, five perchlorate anions in general positions, two on twofold rotation axes (one of which is disordered), and two water molecules of crystallization in general positions, one of them disordered around a twofold crystallographic axis. In the [H6L]6+ cation, two strong intramolecular N—HN hydrogen bonds occur, involving the N atoms of the oxadiazole ring as acceptors and the closest NH+ groups of each dipropylenetriamine unit. In the crystal, the [H6L]6+ cations form channels along the a-axis direction, in which the perchlorate counter-ions and the water molecules are lodged. The crystal packing features a network of N—HO and O—HO hydrogen bonds involving the NH+ groups of the [H6L]6+ cation, the perchlorate anions and the water molecules.