Coordination phenomena of alkali metal, alkaline earth metal, and indium ions with the 1,3,6-naphthalenetrisulfonate ion in protic and aprotic solvents

Not only in acetonitrile (MeCN) but also in primary alcohols (from methanol to 1-hexanol), the coordination ability of alkali metal (Li+, Na+), alkaline earth metal (Mg2 +, Ca2 +, or Ba2 +), and indium (In3 +) ions with the 1,3,6-naphthalenetrisulfonate ion (L3 −, 1.0 × 10− 4 mol dm− 3) has been examined by means of UV-visible spectroscopy.