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Synthesis, Electrochemistry, and Optical Properties of Half‐Sandwich Ruthenium Complexes Bearing Triarylamine‐Anthracenes

2018; Wiley; Volume: 2018; Issue: 5 Linguagem: Inglês

10.1002/ejic.201701409

1099-0682

Eduard Kovalski, Marcus Korb, Alexander Hildebrandt,

Magnetism in coordination complexes

The complex [CpRu II (dppe)(taae)] {Cp = η 5 ‐C 5 H 5 , dppe = 1,2‐(PPh 2 ) 2 ‐C 2 H 4 , taae = 10‐ethynyl‐ N , N ‐di‐ p ‐tolylanthracen‐9‐amine} has been synthesized in a multistep reaction protocol including Sonogashira C , C ‐ and Buchwald–Hartwig C , N ‐ cross coupling reactions. Electrochemical and spectroscopic studies suggest a high degree of delocalization between the ruthenium and triarylamine termini through the anthracene bridge, forming a donor–π–acceptor (D–π–A) dye whose π–π* transitions exhibit charge‐transfer character in the monocationic oxidation state.