Crystal and molecular structures of novel polynuclear complex halogeno-anions containing mercury and platinum or palladium: [Et4N]2Hg2PtCl8, [Et4N]2Hg3PtCl10 and [ Et4N]2Hg3PdCl10

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Abstract
The crystal structure of [Et4N]2Hg2PtCl8 contains centrosymmetric trinuclear anions linked by chloride bridges involving the terminal HgCl bonds; in [Et4N]2Hg3MCl10(M = Pd or Pt) the same type of trinuclear anions are linked by the HgClM bridging chlorine atoms via linear HgCl2 units.