Synthesis and structural characterization of ferrocenyl indenyl derivatives

Abstract

In this study, four ferrocenyl indenyl derivatives, C9H7–C≡C–Fc (1), C9H7–C≡C–Ph–Fc (2), C9H7–C≡C–Ph–C≡C–Fc (3), and C9H7–Ph–C≡C–Fc (4) (where C9H7=indenyl; Fc=C5H5FeC5H4; Ph=C6H5), have been synthesized by Sonogashira and Suzuki cross-coupling reactions and characterized by elemental analysis, and FT-IR, 1H, 13C-NMR, and MS spectroscopic methods, respectively. The molecular structures of 1, 2, and 4 were determined by X-ray single crystal diffraction. Two molecules appeared in the crystal structure of 4, and they interact through an intermolecular hydrogen bond. The electrochemical redox potential differences in 1–4 were investigated using cyclic voltammetry and calculations.