Abstract
AbstractThe cover picture shows two distinct clusters [(W5I8i)Ia(I3)2a(I3)2/2a–a] bridged by the two terminal I9 atoms. The structure of W15I47 was refined by single crystal X‐ray diffraction with the non‐centrosymmetric space group C2 [Z = 2, a = 4088.3(4) pm, b = 952.3(1) pm, c = 1198.5(2) pm, and β = 103.97(1) °]. The characteristic motif in the structure is the square pyramidal tungsten cluster that may be constructed from an octahedral [(W6I8i)I6a]2– cluster by removing one tungsten atom together with its outer iodide ligand to yield [(W5I8i)I5a]n–. The formula W15I47 represents three square pyramidal tungsten clusters with two of them being distinguishable in [(W5I8i)Ia(I3)2a(I3)2/2a–a][(W5I8i)I2a(I3)3/2a–a]2, by different numbers of iodide and triiodide ligands at the cluster vertices. The background is made up of layer sequences and connectivity pattern of pentagonal tungsten clusters in the W15I47 structure (inner iodides are omitted from the drawing). More details are discussed in the article by H.‐J. Meyer et al. on p. 62ff.
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