Fig. 2: Synthesis and characterization of Ln-Cu coordination polymers.
From: Ligand-tuning copper in coordination polymers for efficient electrochemical C–C coupling
a Synthetic pathways of ligands and coordination polymers. b TEM image of L2-Cu. c Cu K-edge XANES spectrum of L2-Cu. The inset displays a magnification of the pre-edge peak. d Cu K-edge FT-EXAFS spectrum and fitting of L2-Cu. The k-range of 2.5–11 Å–1 and the R-range of 0–4 Å were used for the fit. The assignment of N/O/C back-scatterers is subjective, and the interatomic distances are based on the structure simulated by DFT. The Cu K-edge FT-EXAFS spectra of Cu foil and CuPc were used as references. e The structure of Ln-Cu. X represents the substituents and is on the right frame. * indicates the position connecting with triazole rings. Source data are provided as a Source data file.
