abstract |
WHEREIN M1, M2 AND M3 ARE THE SAME OR DIFFERENT TRANSITION METALS SELECTED FROM THE SECOND OR THIRD SERIES OF THE PERODIC TABLE; X IS OXYGEN, SULPHUR, NITROGEN, PHOSPHORUS OR BORON; AN IS ANIONIC ELEMENT OR GROUP AND L1, L2 OR L3 ARE NEUTRAL OR ANIONIC LIGANDS. M1M2M3XAN6L1L2L3 THIS INVENTION RELATES TO A COMPOSITION OF MATTER HAVING THE GENERAL FRMULA |