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Mehrfachbindungen zwischen Hauptgruppenelementen und Übergangsmetallen : XLVI. Organoeisen-Komplexe mit Selen-Brücken |
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| Authors: | Christian Hecht Eberhardt Herdtweck Jürgen Rohrmann Wolfgang A Herrmann |
| Institution: | Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching Deutschland Institut für Anorganische Chemie der Universität München, Meiserstrasse 1, D-8000 München 2 Deutschland |
| Abstract: | The nucleophilicity of the bridging atom of the selenium complex (μ-Se)(η5-C5H5)Fe(CO)2]2 (1) has been demonstrated by addition of the complex cation (η5-C5H5)Fe(CO)2]+: Reaction of 1 with the ionic complex (η5-C5H5)Fe(CO)2-(THF)]BF4] cleanly yields the ionic trinuclear complex (μ3-Se)(η5-C5H5)-Fe(CO)23]BF4] (3). This addition reaction converts the bridging selenium atom from a bent FeSeFe structure into a flattened Fe3Se pyramid (X-ray diffraction studies), without significant changes in the iron-selenium bond lengths (244.9(<1) pm and 242.7(1)/243.3(1)/244.8(1) pm, respectively). These bonds are considered to be single bonds in accord with the EAN rule. |
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