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Approximately 30 years have passed since the discovery of high‐oxidation state (“d0”) alkylidene and alkylidyne complexes of tantalum. That chemistry was the starting point for the synthesis of d0 Mo, W, and Re alkylidene and alkylidyne complexes. These high‐oxidation state complexes, especially Mo and W complexes that contain one or more alkoxide ligands, are efficient catalysts for alkene and alkyne...
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