Thermal ellipsoid plot of [Ir2(l-SC6F5)2(cod)2] (1) with ellipsoids drawn at the 30% probability level

March 05, 2024

• Title:       

  Thermal ellipsoid plot of [Ir₂(l-SC₆F₅)₂(cod)₂] (1) with ellipsoids drawn at the 30% probability level

• Image Source:

  Thiolate complexes of iridium. Structures of [Ir2(μ-SC6F5)2(cod)2], [Ir(SC6F5)(H)(SiPh3)(XNC)3] and [Ir3(μ-SC6F5)2</su

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  Figure 1

• Associated context:

  The complex [Ir₂(l-SC₆F₅)₂(cod)₂] (1) was reported a number of years ago by Terreros and co-workers [8] who prepared it from [Ir₂(l-Cl)₂(cod)₂] using a mixture of C₆F₅SH and NEt₃. Our method, starting from [Ir₂(l-OMe)₂(cod)₂], offers a slightly improved yield (75%). The structure of 1 (Fig. 1) has a geometry at Ir that can be described as square planar distorted towards square pyramidal, with the alkene groups each occupying a single coordination site. Selected bond lengths and angles are given in Table 2. The sharply angled Ir–S–Ir bonds cause the molecule to adopt a pyramidal structure with the dienes and C₆F₅ groups forming the base and the two sulphurs a truncated apex. Although the two iridiums bear identical substituents and bridging groups which closely approach a symmetrical arrangement, they are not related by any crystallo-graphic symmetry element.