Optical Properties in Heteronuclear Gold(I)/Silver(I) Complexes of Aliphatic Mixed-Donor Macrocycles Featuring Metallophilic Interactions

The reaction of the polymeric heterometallic compound [{Au(C6Cl5)2}Ag]n with the macrocyclic ligands 1-aza-4,7,10-trithiacyclododecane (L1), 1,7-diaza-4,11-dithiacyclododecane (L2), 1-aza-4,10-dithia-7-oxacyclododecane (L3) in tetrahydrofuran (THF) and 1 : 1 reaction molar ratio affords the new Au(I)/Ag(I) complexes [{Au(C6Cl5)2}{Ag(L1)}] (1), [{Au(C6Cl5)2}{Ag(L2)}] (2), [{Au(C6Cl5)2}{Ag(L3)}] (3) and [{Au(C6Cl5)2}{Ag(L3)}]2 (4) that have been structurally characterized. Despite 1–3 show the same nature of binuclear complexes, only 3 changes its luminescence properties upon grinding as a consequence of partial amorphization.