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New heterodimetallic cyclopentadienyl carbonyl complexes: crystal structure of (C5Me4Et)(μ-CO)3Ru(C5Me5) |
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| Authors: | S. Francis Amevor Hans-Ulrich Hund Albrecht Salzer |
| Affiliation: | a Anorganisch-chemisches Institut der Universität Zürich, Zürich, Switzerland b Institut für Anorganische Chemie der RWTH Aachen, D-52056, Aachen, Germany |
| Abstract: | A series of heterodimetallic complexes of general formula (C5R5)M(μ-CO)3RuC5Me5 (M = Cr, Mo, W; R = Me, Et) has been prepared in good yields by the reaction of [C5R5M(CO)3]− with [C5Me5Ru(CH3CN)3]+. (C5Me4Et)W(μ-CO)3Ru(C5Me5) was characterized by a crystal structure determination. The W---Ru bond length of 2.41 Å is consistent with the formulation of a metal-metal triple bond, while the unsymmetrical bonding mode of the three bridging carbonyl groups reflects the inherent non-equivalence of the two different C5R5M-units. Using [CpRu(CH3CN)3]+ or [CpRu(CO)2(CH3CN)]+ as the cationic precursor leads to the formation of dimetallic species (C5R5)M(CO)5RuC5H5 with both bridging and terminal carbonyl groups. |
| Keywords: | Chromium Molybdenum Tungsten Ruthenium Carbonyl Cyclopentadienyl Metal-metal bond Crystal structure |
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