X-ray, IR and Raman study of Ag(I), Cu(II) and Cd(II) complexes with 4,5-bis(N,N-di(2-hydroxyethyl)iminomethyl)acridine

Fluorescence Studies of Amine-substituted Azaanthracene Metal Complexes

“…In Figure 2.63, right, the solid state structure of [CdCl(BHIA)] + is shown, published by Denisova and co-workers. [59] It illustrates the similar structure motif of an acridinyl amine sensor system and its fluorescence properties has been discussed in the introduction (Figure 1. 11).…”

“…[57] A different research group were able to crystallise metal complexes of BHIA with Cu 2+ , Ag + , and Cd 2+ . [59] All structures demonstrate the interactions of the nitrogen-containing side arms with the metal ions. Accordingly, the PET should be hindered along with the return of fluorescence emission.…”

“…The titration experiment with cadmium ions (Figure 1.11, right) can be analogously explained as well as for Zn 2+ and Hg 2+ ions, only less pronounced. As already mentioned, crystallographic studies were made with these complexes, discussing the free ligand [58] and its metal complexes with Ag + , Cu 2+ , and Cd 2+ ions, published in 2016 [59] . The information of these publications are interesting, especially when comparing the fluorescence studies with the solid state data.…”

“…This binding motif, where the methylene bridged amines in the 4-and 5-positions and the aromatic nitrogen atom of the acridine all are involved in a metal ion coordination, is currently only present with one entry in the CSD. The solid state data was published in 2016 [59] during the writing of this thesis. Other two examples with methylene bridged phosphorous atoms coordinating a ruthenium ion can be found in the database.…”

“…[129] , illustrating the similar structure motif of an acridinyl amine sensor system. [59] The solvent-separated counter ion was omitted for clarity.…”