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New 1,2,1’ substituted bis(diphenylphoshino)ruthenocenes are described and used as ligands in cis-Pt(II) complexes. The new substances were also employed in Au(I) complexes, together with previously described ferrocene-based ligands. Examples of crystal structures are presented for the ligands, as well as for the platinum and gold complexes. The preliminary biological activity covering antitumour,
