Synthesis, Structure and Cation-Binding Properties of Some [4 + 4] Metallocyclic MO22+ (M = Mo or W) Derivatives of 9-Phenyl-2,3,7-trihydroxyfluor-6-one

Synthesis, Structure and Cation-Binding Properties of Some [4 + 4] Metallocyclic MO22+ (M = Mo or W) Derivatives of 9-Phenyl-2,3,7-trihydroxyfluor-6-one