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Structural and Luminescence Properties of Heteronuclear Gold(I)/Thallium(I) Complexes Featuring Metallophilic Interactions Tuned by Quinoline Pendant Arm Derivatives of Mixed Donor Macrocycles

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posted on 21.04.2020, 18:07 by Rocío Donamaría, Vito Lippolis, José M. López-de-Luzuriaga, Miguel Monge, Mattia Nieddu, M. Elena Olmos
Reaction of the heterometallic complex [{Au­(C6F5)2}­Tl]n with the quinoline pendant arm derivatives L1 and L2 of the mixed donor macrocycles [12]­aneNS2O and PhenNS2 affords the new Au­(I)/Tl­(I) complexes [{Au­(C6F5)2}­Tl­(L1)] (1), [{Au­(C6F5)2}­Tl­(L2)] (2), [{Au­(C6F5)2Tl}­{Au­(C6F5)2Tl­(L1)}]2 (3), and [{Au­(C6F5)2Tl}­{Au­(C6F5)2Tl­(L2)}]n (4) depending on the reaction molar ratios used. These complexes present different optical properties strictly related to their structural features and to the presence of Au­(I)···Tl­(I) metallophilic interactions, which are finely tuned by the coordinating quinoline moiety and have been studied experimentally and theoretically via TD-DFT calculations.

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