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ChemInform Abstract The reactions of the title complex with L-L' = Ph2E(CH2)2PPh2 (E: P, As) and Ph2PCH2PPh2 in CH2Cl2 producing via intermediates the 1:1 bis(chelate) complexes ((η2-L-L')Pt(η2-S2CNEt2))+ and, in the case of Ph2As(CH2)2PPh2 and Ph2PCH2PPh2, the 1:2 complexes ((η1-L-L')2Pt(η2-S2CNEt2))+ are studied by multinuclear (31P, 195Pt) magnetic resonance technique. The reactions with Ph2PCH2P(X)Ph2 (X: S, Se) leading to the bis(chelate) complexes ((η2-L-L')Pt(η2-S2CNEt2))+ as the final products are also studied; 1:2 complexes are not formed. Ph2As(CH2)2P(X)Ph2 do not react with the starting title complex.

The studies are carried out on Hg(II) perchlorate complexes of the bidentate ligands as well as the free ligands.