Xunwen Xiao

Synthesis and Electrochemical Properties of Two Transition Metal Coordination Complexes Based on 4-Pyridyl-Substituted TTF Ligand

The synthesis, crystal structures, and electrochemical properties of two transition metal coordination complexes, Co(acac)2•(EDO-TTF-4-py)2•2CH3CN 1, and ZnBr2•(EDO-TTF-4-py)2 2, are reported, where acac = acetylacetonate and EDO-TTF-4-py, L1 (EDO-TTF = ethylenedioxotetrathiafulvalene; py = pyridine). In complex 1, two N atoms from L1 are coordinated in the trans configuration to the Co(II) ion of Co(acac)2 to form an octahedral Co complex. And in complex 2, the Zn(II) atom is tetrahedral by two N atoms from L1 and two Br ions. Cyclic voltammetry measurements for both complexes show a sizable interaction involving the electroactive L1 ligand and the metal ion.

Syntheses, Crystal Structure, and Properties of Cu(II) and Zn(II) Complexes with EDO-TTF-3-py

The syntheses, crystal structures, and electrochemical of the transition metal coordination complexes, Cu(acac)2(EDO-TTF-3-py)2 (2) and Zn(acac)2(EDO-TTF-3-py)2 (3) are reported, where acac = acetylacetonate; EDO-TTF-3-py (L1) = 4,5-ethylenedioxy-3′-(3′-pyridyl)-tetrathiafulvalene). In the complexes 2 and 3, the ligand L1 is coordinated to the metal atom through pyridine nitrogen. The similarly oxidation potentials were observed for the ligand L1 and 2 and 3, indicating the negligible interaction between the ligand and the metal in solution.