Synthese und eigenschaften neur kupfer- und gold-komplexe des typs C5H5MPR3, C5Me5MPR3 und R″C2MPR3 (M = Cu,Au) sowie die kristallstruktur von C5H5AuPPr3i |
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Authors: | H Werner H Otto Tri Ngo-Khac Ch Burschka |
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Institution: | Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-8700 Würzburg B.R.D. |
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Abstract: | The complexes C5H5CuPR3 (R = Me, Pri), C5H5AuPR3 (R = Me, Pri), C5Me5CuPR3 (R = Me, Pri, Ph) and C5Me5AuPR3 (R = Pri, Ph) are prepared from ClCuPR3]n or ClAuPR3 and LiC5H5 (TlC5H5) or LiC5Me5, respectively. According to the 1H and 13C NMR spectra, the cyclopentadienyl and pentamethylcyclopentadienylgold compounds are fluxional in solution. The X-ray crystal structure of C5H5AuPPr3i has been determined at ?120°C. The gold atom is in a linear arrangement (PAuC(1) = 177.0(2)°) and primarily σ-bonded to the cyclopentadienyl ring which shows a weak “slip distortion” toward a η3-mode of coordination. The complexes C5R′5AuPR3 (R′ = H, Me) and C5Me5CuPPr3i react with 1-alkynes such as C2H2, HC2Ph and HC2CO2Me to form alkinylgold and copper compounds R″C2MPR3. They have been characterized by IR, UV and NMR (1H, 13C, 31P) spectroscopy. |
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