Diphosphines and pyrazole/pyrazolate-type ligands as building blocks in luminescent Au(I) complexes

Thermodynamic Aspects of Aurophilic Hydrogelators

“…Although aurophilic bonding has been extensively observed in the solid state, with through X-ray diffraction, the number of cases where this kind of interaction has been observed in solution is still scarce. Several techniques and methods have been employed to attribute the occurrence of intra- and intermolecular aurophilicity in solution, including EXAFS, − X-ray diffraction in solution, cyclic voltammetry, mass spectrometry, , NMR, − UV–vis absorption spectroscopy, ,− and emission studies, regarding concentration dependent emission, luminescence bands assigned to Au···Au bonded excimers and exciplexes, occurrence of emission bands characteristic of aurophilic contacts (MC or MMLCT transition), and effect on the radiative and nonradiative rate constants …”

Uncommon and Emissive {[Au2(C3H6NS2)2][Au(C3H6NS2)2]2(PF6)2} Mixed Au+ and Au3+ Pseudotetranuclear Crystalline Compound: Synthesis, Structural Characterization, and Optical Properties

“…18 The broad emission bands also attract interest for the development of photonic materials. 19 Considering the lack of reported studies concerning the synthesis and optical properties of mixed oxidation gold compounds, this work describes the synthesis and characterization of a new crystalline pseudotetranuclear compound with the formula {[Au 2 (C 3 H 6 NS 2 ) 2 ][Au(C 3 H 6 NS 2 ) 2 ] 2 (PF 6 ) 2 }, using [(C 6 H 5 ) 3 PAuCl] as the Au + precursor and thiram as the ligand. The synthesized crystalline compound presented remarkable structural and luminescent features, including two Au + atoms and two Au 3+ atoms in the same crystalline structure and radiative lifetimes on the order of a few nanoseconds and microseconds.…”

“…In addition to the pharmacological properties of complexes involving Au + and Au 3+ , these compounds can exhibit luminescence properties in both the solid state and in solution, with broad emission bands in the blue, , yellow, , and red spectral regions. , The emission lifetimes can vary from nanoseconds to hundreds of microseconds . The broad emission bands also attract interest for the development of photonic materials …”