Incorporating heterometals into titanium–oxygen
clusters
represents an effective approach to adjusting the band gap and absorption
properties. Herein, a family of heterometallic Ti–Cu clusters
was synthesized under solvothermal conditions. The unique structural
feature of these clusters is the formation of ring clusters with myo-inositol
ligands serving as structure-directing ligands. The myo-inositol ligand,
as a typical polyol ligand, demonstrates flexible and distinctive
coordination modes capable of chelating up to eight transition metal
ions simultaneously. Compounds 4 and 5 show
significant absorption in the visible region, indicating that the
incorporation of Cu ions can efficiently tune the band gap of titanium–oxygen
clusters.