Syntheses, structures, and properties of metal complexes involving π-conjugated tetrathiafulvalene–pyridine ligand

Abstract

Four metal complexes based on the phenyl-bridged pyridine ligand with tetrathiafulvalene unit (TTF-Ph-Py, L), Ni II(acac) 2(L) 2 ( 1, acac = acetylacetonate), M(hfac) 2(L) 2 (M = Ni II, 2; M = Cu II, 3; hfac = hexafluoroacetylacetonato) and [Co II(Tp Ph2)(OAc)(L)]·H 2O ( 4, Tp Ph2 = hydridotri(3,5-diphenylpyrazol-1-yl) borate), have been synthesized and structurally characterized. The absorption spectra and redox behaviors of these new compounds have been studied. Optimized conformation and molecular orbital diagram of L has been calculated with density functional theory (DFT).