Fig. 1: Overview of this work.
From: Synthesis of metalla-dual-azulenes with fluoride ion recognition properties
a Structural skeletons of azulene, cyclopenta[cd]azulene (CPA) and metalla-dual-azulene (MDA). b The reactivities of MDA, demetalation of MDA by treatment with nBu4NF along with the noticeable color change of the solution (left), and nucleophilic addition of MDA with various reagents (right).
