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Abstract
Synthesis, Raman and NMR studies are presented for the new octahedral trimetallic complexes with composition [IrCl(SnCl 3)(HgCl)(CO)(PR 3) 2], R = p-XC 6H 4; X = H, CH 3O, F, Cl. Only the isomer containing the Cl 3SnIrHgCl fragment and trans phosphine ligands is observed. Force constants for the IrSn and IrHg bonds as well as 31P, 119Sn and 199Hg NMR data are reported. The presence of a spin-spin coupling constant of more than 40,000 Hz between the 199Hg and 119Sn atoms is shown to originate from a two-bond and not a one-bond interaction.
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