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

Gold(I) Complexes with Bulky Phosphanes: A Dual Approach to Triplet Harvesting and Hydroamination Catalysis Aquino Samper, Araceli de Santamaría, Nazaret. Moro, Artur J. Aguilà Aviles, David Nicasio, M. Carmen Lima, João Carlos Rodríguez Raurell, Laura Prieto, Auxiliadora 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. 2026-04-08T15:10:55Z 2026-04-08T15:10:55Z 2025-02-11 2026-04-08T15:10:55Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0020-1669 https://hdl.handle.net/2445/228733 763696 https://hdl.handle.net/2445/228733 eng Versió publicada del document publicat a: https://doi.org/10.1021/acs.inorgchem.4c04964 Versió publiada del document publicat a: https://doi.org/10.1021/acs.inorgchem.4c04964 Inorganic Chemistry, 2025, vol. 64, num.7, p. 1-11 https://doi.org/10.1021/acs.inorgchem.4c04964 cc-by (c) Aquino Samper, Araceli de et al., 2025 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess 11 p. application/pdf American Chemical Society