2026-04-17T05:49:52Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2287332026-04-09T19:10:49Zcom_2072_1057col_2072_478933

00925njm 22002777a 4500 dc Aquino Samper, Araceli de author Santamaría, Nazaret. author Moro, Artur J. author Aguilà Aviles, David author Nicasio, M. Carmen author Lima, João Carlos author Rodríguez Raurell, Laura author Prieto, Auxiliadora author 2026-04-08T15:10:55Z 2026-04-08T15:10:55Z 2025-02-11 2026-04-08T15:10:55Z Two families of mononuclear gold(I) complexes featuring Au-chromophore units, with chromophores being carbazole (a), phenanthrene (b), or dibenzofuran (c), were synthesized. The Au(I) atoms are coordinated to two phosphanes, either $PMe_{2}Ar^{Xyl2}(Ar^{Xyl2} = 2,6-C_{6}H{_3}-(2,6-C_{6}H{3}-Me_{2})_{2})$ (P1) or the bulkier $PCyp_{2}Ar^{Xyl2}(Cyp = cyclopentyl)$ (P2). The photophysical properties of these complexes were extensively studied, with a particular focus on the effects of phosphane bulkiness and chromophore electron-donating capacity on triplet state quantum yields ($\Phi_{T}$). Nanosecond-laser flash photolysis measurements were employed to calculate $\Phi_{T}$. Time-dependent density functional theory (TD-DFT) calculations supported the absorption and emission assignments, providing insights into the electronic state gaps involved in photophysical processes and their relative populations. The parent complex AuCl (P2) in combination with ${NaBAr_{4}}^F$, as a chloride scavenger, served as an efficient catalyst for the hydroamination of a variety of alkynes and amines, under mild conditions and with low Au loading (0.1–0.2 mol %). Luminescent studies allowed us to check the active catalytic species. https://hdl.handle.net/2445/228733 Gold(I) Complexes with Bulky Phosphanes: A Dual Approach to Triplet Harvesting and Hydroamination Catalysis