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Komplexe mit kohlenstoffsulfiden und -seleniden als liganden : X. Synthese und kristallstruktur von C5H5(PMe3)Co(μ-CS)2CoC5H5: Ein zweikernkomplex mit unsymmetrischen Co(CS)Co-brückenbindungen |
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| Authors: | H Werner O Kolb |
| Institution: | Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-8700 Würzberg B.R.D. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching B.R.D. |
| Abstract: | The complex C5H5(PMe3)Co(μ-CS)2CoC5H5 (I) is formed by the reaction of C5H5Co(PMe3)CS and CH2I2. The X-ray structure analysis shows an unsymmetrical non-planar Co2C2-skeleton with different Co---C bond lengths. The Co---Co distance is 239.2 pm. Compound I thus represents a new example of binuclear (18 + 16)-electron complexes in which the more electron-rich metal atom forms a donor bond to the more electron-poor counterpart. The reaction of I with ligands such as P(NMe2)3 does not lead to bridge cleavage indicating the stability of the Co(CS)2Co-framework. |
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