Bis(hydroxyammonium) hexachloridoplatinate(IV)-18-crown-6 (1/2)

Abstract

In the title complex, (NH3OH)2[PtCl 6]·2C12H24O6, the Pt IV atom is coordinated by six chloride anions in a slightly distorted octahedral geometry. The Pt-Cl bond lengths are comparable to those reported for other hexachloridoplatinate(IV) species. The hydroxyammonium groups act as linkers between the [PtCl6]2- anion and the crown ether molecules. The anion is linked to two hydroxyammonium cations via O-H⋯Cl hydrogen bonds and each hydroxyammonium moiety is linked to a crown ether molecule by hydrogen bonds between ammonium H atoms and 18-crown-6 O atoms. The crown ether molecules have the classic crown shape in which all O atoms are located in the inner part of the crown ether ring and all-CH2-groups are turned to the outside.