Synthesis and Structure of [CuMo(CH3CO2)2(L)(CO)2(η5-C5H5)]: Monomeric Copper(II) Diacetate as Building Block of a Heterometallic Binuclear Complex

✍ Scribed by Prof. Dr. Helmut Werner; Joachim Roll; Klaus Linse; Prof. Dr. Manfred L. Ziegler

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 261 KB
• Volume: 22
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.198309821

✦ Synopsis

to the IR data structural proof is provided principally by the I3C-NMR spectrum (in C6D6) which, apart from signals of the phosphane-and cyclopentadienyl-carbon atoms, contains two doublets of doublets at 6=311.41 and 94.14; these are assigned, respectively, to C' and C2 of the vinylidene ligand. In the case of the phenylvinylidene compound 213] the corresponding signals are observed at S=316.99 and 116.31, respectively.

Complex 4 reacts with sulfur (in hexane), selenium, and tellurium (in benzene) to afford the intensely colored chalcogenoketenerhodium compounds 5-7 in good yield (E=S: 45%, E=Se and E=Te: 70%)13]. The reactivity of the chalcogenes decreases markedly from sulfur via selenium to tellurium; red selenium is considerably more reactive than the gray allotrope. Whereas 5 (red) and 6 (redbrown) are air-stable, 7 (green) is readily oxidized. Solutions of 7 (e.g. in C6H6) slowly decompose to yield 4 and tellurium ; additional products cannot be detected.