FERROCENIUM TETRACHLOROANTIMONATE

The crystal structure of ferrocenium tetrachloroantimonate, [Fe(C5H5)( 2)][SbCl4], has been determined at 173 K. The cyclopentadiene rings in the ferrocenium cation are in an eclipsed conformation. The Sb atom i s coordinated by six Cl ions in an irregular octahedral arrangement. T wo Cl- ions form halogen bridges with neighbouring Sb atoms, resulting in a polymeric chain of anions {the compound may be named catena-poly [ferrocinium (dichloroantimonate-di-mu-chloro)]}. The ferrocenium cati ons are stacked between these polymeric chains and form two-dimensiona l layers parallel to the be plane.