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- W2041875900 abstract "Decacarbonyldirhenium(O) (I) reacts photochemically with acetaldehyde or propionaldehyde (II, III) to give predominantly tetradecacarbonyl-μ-hydridotrirhenium (VI). In addition, μ-acyloctacarbonyl-μ-hydridodirhenium complexes (IV, V) are obtained in oxidative addition reactions with simultaneous loss of two CO ligands. Complexes IV and V were characterized by their elemental analyses, IR, 1H NMR, and 13C NMR spectra. Furthermore, the molecular structure of IV was determined by X-ray structure analysis. IV shows approximate (Cs-symmetry. Two Re(CO4) groups are connected via the C and O atoms of the carbonyl function of an acetyl bridge, and from the steric arrangement of the Re(CO)4 moieties and NMR spectroscopic evidence, a hydrido bridge has to be assumed between the Re atoms, which rules out a ReRe bond. The two coordination octahedrons are joined by the hydrido bridge. The connection of two further edges by the acetyl bridge causes an eclipsed arrangement of the CO ligands in IV. Dekacarbonyldirhenium(0) (I) reagiert photochemisch mit Acet- oder Propionaldehyd (II, III) bevorzugt zu Tetradekacarbonyl-μ-hydrido-trirhenium (VI). Zusätzlich werden μ-Acyl-octacarbonyl-μ-hydrido-dirhenium-Komplexe (IV, V) in einer oxidativen Additions-Reaktion bei gleichzeitigem Verlust zweier CO-Liganden erhalten. Elementaranalysen, IR-, 1H-NMR- und 13C-NMR-Spektren beweisen die Konstitution der Komplexe. Weiterhin wurde die Molekülstruktur von IV durch eine Röntgen-Strukturanalyse bestimmt. IV zeigt angenähert Cs-Symmetrie. Zwei Re(CO)4-Gruppen sind über die C- und O-Atome der Carbonyl-Funktion einer Acetyl-Brücke verbunden. Zusätzlich ist wegen der sterischen Anordnung der Re(CO)4-Einheiten und NMR-spektroskopischer Befunde eine Hydrido-Brücke zwischen den Re-Atomen anzunehmen, die eine ReRe-Bindung ausschliesst. Die Hydrido-Brücke bildet eine gemeinsame Ecke der beiden Koordinations-Oktaeder." @default.
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- W2041875900 date "1984-07-01" @default.
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- W2041875900 title "Photochemisch induzierte oxidative addition von aldehyden an dekacarbonyldirhenium(0)" @default.
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- W2041875900 doi "https://doi.org/10.1016/0022-328x(84)80336-8" @default.
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