Crystal structures and properties of the tetrathiafulvalene substituted bispyrazol ligand and its rhenium(I) tricarbonyl complex

The new tetrathiafulvalene-functionalized bispyrazole ligand (L) and the corresponding tricarbonyl rhenium(I) complex (4) have been synthesized and structurally characterized. Their absorption spectra and redox behaviors have been recorded, and the absorption spectral changes of L upon addition of NOPF6 have also been studied in detail.