1401422-43-2Relevant academic research and scientific papers
Mono- and dinuclear luminescent 1,1′-biisoquinoline gold(I) complexes
Bardají, Manuel,Miguel-Coello, Ana B.,Espinet, Pablo
, p. 91 - 98 (2013/01/13)
Mono- and dinuclear, cationic or neutral gold(I) derivatives [(biisoq)(AuL)]n+ (L = PPh3, n = 1; L = C 6F5, n = 0), and [(μ-biisoq)(AuL)2] n+ (biisoq = 1,1′-biisoquinoline; L = PMe 3, PPh3, PMePh2, n = 2; L = C6F 5, n = 0) have been prepared. Aurophilic interactions and steric requirements of the co-ligand L impose the torsion angle between the two isoquinoline units of the flexible, non-planar 1,1′-biisoquinoline ligand, affording different structures. The X-ray molecular structure of the mononuclear complex with PPh3 confirmed the monodentate mode for the biisoquinoline ligand. In the three X-ray structures solved for dinuclear compounds with bridging biisoquinoline, the torsion angles and the intramolecular gold-gold distances found are, respectively: 65.2° and 3.0739(7) A? for L = PMe3; 80.10° and 3.785 A? for L = C6F5; 95.6° and 4.505 A? for L = PMePh 2. All the phosphine derivatives are luminescent at room temperature in the solid state, with emission maxima in the range 390-422 nm, and emit from 370 to 438 nm at 77 K. They are also emissive in CH2Cl2 at 298 K in the range 381-458 nm, whilst they are luminescent at 77 K in the range 382-550 nm. The fluoroaryl derivatives are not emissive.
