875057-98-0Relevant academic research and scientific papers
Generation and trapping of a superelectrophilic terminal fluorophosphinidene complex
Compain, Carine,Donnadieu, Bruno,Mathey, Francois
, p. 540 - 543 (2006)
Comparative DFT calculations on terminal phosphinidene complexes [MeP-Cr(CO)5] and [FP-Cr(CO)5] show a huge increase of the positive charge at P when replacing the methyl by the fluorine substituent (NBO charges +0.60 and +0.94). The electrophilic fluorination of the (3,4-dimethylphospholyl)pentacarbonylmolybdenum anion by Selectfluor gives a straightforward access to the corresponding 1-fluoro-3,4-dimethylphosphole molybdenum complex. This complex reacts as a conjugated diene with dimethyl acetylenedicarboxylate to give the corresponding 7-fluoro-7-phosphanorbornadiene complex. This bicyclic species is a precursor of [FP-Mo(CO)5] at 120°C in xylene, as shown by trapping reactions with diphenylacetylene and 2,3-dimethylbutadiene.
