A New P,N-Chelating Ligand Combining Phosphaferrocene and Azacymantrene Units
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A 2-(ethoxycarbonyl)ferrocene is transformed into a 2-(pyrrolylmethyl)phosphaferrocene, whose reaction with Mn2(CO)10 yields a 2-(azacymantrenylmethyl)phosphaferrocene. This new ligand gives a chelate with Mo(CO)4 whose structure shows that molybdenum is displaced from the P−lone pair axis by 16.5°, indicating that the lone pair is less directional than the N lone pair. It appears that P behaves as a stronger donor than does N in this case.
创建时间：
2016-02-23
