TiII
TiII is the designation used in two related but distinct scientific contexts. In spectroscopy and astronomy, Ti II refers to singly ionized titanium, Ti+, the dominant ionization state of titanium in many stellar atmospheres. In inorganic and coordination chemistry, Ti(II) denotes titanium in the +2 oxidation state. The notation TiII/Ti2+ thus appears in both astrophysical line identifications and discussions of low-valent titanium compounds, depending on the field.
In astrophysical spectroscopy, Ti II lines are among the most prominent features in the optical spectra of
In chemistry, titanium in the +2 oxidation state forms Ti(II) compounds that are typically highly reactive and
TiII thus serves as a bridge between observational astrophysics and fundamental inorganic chemistry, with the meaning