from diffractometer intensity measurements. The overall packing arrangements in the three structures are broadly similar, but whilst the Cu n ions in the arylsulphonates are in elongated, near tetragonally distorted, octahedral environments, that in the o-camphor-10-sulphonate is better described as a rhombically distorted octahedron. Details of these, and related structures, may be rationalized in terms of Jahn-Teller distortions and hydrogen bonding.

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Durch Bestrahlung des Wolframkomplexes (I) in Tetramethylsilan mit einer 500W‐Quecksilberniederdrucklampe entsteht unter Einschiebung von Wolfram in die C‐H‐Bindung von Tetramethylsilan der in Form von zwei Isomeren vorliegende Komplex (II).