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An unusual, additional side‐on coordination of an iridium center and a rhodium complex fragment with 16 valence electrons is realized in the new compounds 1. Compounds 1a, E = P, M = Ir, and 1b, E = As, M = Rh, were prepared from the sandwich complexes [Cp*Fe(η5‐E5)]. The isomers of 1a and 1b with terminal η1 coordination of the metal complex fragment have been obtained as well.

No abstract

lo] Alle Berechnungen wurden rnit dem Progammpaket VAMP 4.5 [I I] ohne Symrnetrierestriktionen auf Restricted-Hartree-Fock (RHF)-Niveau durchgefuhrt. Die berechneten Geometrien wurden durch Schwingungsanalysen als Minima auf der Energiehyperflache charakterisiert.

Good yields of the heteroatom clusters 1 and 2 were obtained by deliberate cage extension. The Co3MoAs6 polyhedral framework of 2 corresponds to a distorted sphenocorona. The ideal polyhedral sphenocorona with 10 corners, 14 faces, and 22 edges is shown right. Cp* = η5‐C5Me5.