TY - JOUR A1 - Herrmann, Wolfgang A. A1 - Plank, Johann A1 - Hubbard, John L. A1 - Kriechbaum, Gangolf W. A1 - Kalcher, Willibald A1 - Koumbouris, Basile A1 - Ihl, Gabriele A1 - Schäfer, Adolf A1 - Ziegler, Manfred L. A1 - Pfisterer, Heike A1 - Pahl, Claudia A1 - Atwood, Jerry L. A1 - Rogers, Robin D. T1 - Übergangsmetall-Methylen-Komplexe, LI [1]. Carbocyclische Carbene, Carben-Brücken, kleine Kohlenwasserstoff-Liganden und Metallacyclen: Beispiele einer umfassenden Synthesekonzeption T1 - Transition metal methylene complexes, LI [1]. Carbocyclic carbenes, carbene bridges, small hydrocarbon ligands, and metallacycles: examples of a general synthetic concept T2 - Zeitschrift für Naturforschung, B N2 - Carbene transfer from aliphatic diazoalkanes upon coordinatively unsaturated metal centers is a general synthetic concept that provides straight-forward routes into organo-metallic hydrocarbon chemistry. A comparison focussing on several key reactions of general applicability demonstrates that mononuclear organometal substrates add carbenes that may act as bridging ligands (e.g., compound 6) if they arise from ω,ω'-bisdiazoalkanes. By way of contrast, metal-metal double bonds cleanly form dimetallacyclo-propane-type derivatives under very mild conditions (7-9). The broadest variety of structures is finally encountered with metal-metal triply bonded precursors such as the molybdenum compounds 3: here, the initial diazoalkane adducts are subject to further rearrangement processes commonly leading to metal-metal single bonds (11) or causing irreversible cleavage of the dinuclear metal systems (10). KW - Carbene Transfer KW - Metal-Metal Multiple Bonds Y1 - 2014 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/71976 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-719765 SN - 1865-7117 SN - 0932-0776 VL - 38.1983 IS - 11 SP - 1392 EP - 1398 PB - Verlag der Zeitschrift für Naturforschung CY - Tübingen ER -