ISSN:
0009-2940
Keywords:
Chelate dicarbenes
;
Indenone
;
Cyclovoltammetry
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Synthesis of a 2H-Inden-2-one Complex by Reduction of a Metal-Bound DicarbeneHerrn Professor Dr. Dr. h. c. mult. E. O. Fischer zum 75. Geburtstag gewidmet.Tetracarbonylchromium complexes with chelating o-phenylene-biscarbene ligands are reduced in two steps as shown by cyclic voltammetry. The first step corresponds to a reversible one-electron transfer, the second to an irreversible one-electron reduction followed by a rapid rearrangement of the biscarbene ligand into an η5-bound 2H-inden-2-one system by a twofold C-C coupling with one CO ligand. By reaction of tetracarbonyl[o-phenylenebis(methoxymethylene)]chromium (4) with sodium amalgam in acetonitrile the diamagnetic tricarbonyl(η5-1,3-dimethoxy-2-indenone)chromium dianion [6]2- is formed as the final reduction product. Its structure was determined by NMR and IR spectroscopy.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931261203
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