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. 2019 Aug 2;10:1701. doi: 10.3389/fmicb.2019.01701

FIGURE 1.

FIGURE 1

Chemical structures of 1,10-phenantroline-5,6-dione (phendione) (A), [Cu(phendione)3](ClO4)2.4H2O (Cu-phendione) (B) and [Ag(phendione)2]ClO4 (Ag-phendione) (C). Perchlorate anions and water molecules have been omitted for clarity.