Synthesis, structure and electrochemical properties of 3,4,5-triaryl-1,2-diphosphaferrocenes
Inorganic Chemistry Frontiers, ISSN: 2052-1553, Vol: 9, Issue: 11, Page: 2608-2616
2022
- 8Citations
- 2Captures
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Article Description
Aryl-substituted sodium 1,2-diphosphacyclopentadienides Na(PCR) (R = Ph, 4-Me-CH, 4-Cl-CH)(1a-c) react with [FeCp(η-CHCH)][PF] to give heteroleptic 3,4,5-triaryl-1,2-diphosphaferrocenes [FeCp(η-PCR)] (2a-c) in 71-78% yield. The structures of 2a-c were confirmed by NMR, UV-Vis spectroscopy and X-ray structure analysis, and supported by DFT calculations. Electrochemical studies of 2a-c in CHCN demonstrate a pronounced reversible one-electron oxidation, while in the solid state, all 3,4,5-triaryl-1,2-diphosphaferrocenes show fully reversible oxidation and reduction waves, which indicates the stability of the oxidized form. Regardless of the substituent (R = Ph, 4-Me-CH, 4-Cl-CH), the studied 1,2-diphosphaferrocenes have similar oxidation and reduction potentials.
Bibliographic Details
Royal Society of Chemistry (RSC)
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