Aurophilicity and Photoluminescence of (6‐Diphenylpnicogenoacenaphth‐5‐yl)gold Compounds. Issue 5 (17th January 2019)

• Record Type: Journal Article
• Authors: Do, Truong Giang; Hupf, Emanuel; Lork, Enno; Kögel, Julius F.; Mohr, Fabian; Brown, Alex; Toyoda, Ryojun; Sakamoto, Ryota; Nishihara, Hiroshi; Mebs, Stefan; Beckmann, Jens
• Is Part Of: European journal of inorganic chemistry. Issue 5(2019)
• Page Start: 647
• Page End: 659
• Publication Date: 2019-01-17
• Subjects: Antimony -- Arsenic -- Phosphoros Gold -- Tin -- peri‐Interactions -- Luminescence -- P ligands; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201801190
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : The organotin precursors 6‐Br‐Ace‐5‐SnBu3 (6, Ace = acenaphthyl) and 6‐Ph2 E‐Ace‐5‐SnBu3 (7a : E = P;7b : E = As;7c : E = Sb) were prepared and used for the synthesis of organogold complexes, namely, the homodinuclear arylgold(I) species (6‐Ph2 E‐Ace‐5‐Au)2 (8a : E = P;8b : E = As;8c : E = Sb), arylgold(III) dichloride 6‐Ph2 P‐Ace‐5‐AuCl2 (9 ), diarylgold(III) chloride [ trans ‐(6‐Ph2 P‐Ace‐5‐)2 Au]Cl ([10 ]Cl), as well as the heterodinuclear gold complexes 6‐Ph2 P(AuX)‐Ace‐5‐Au(AsPh3 ) (11a : X = Cl;11b : X = Br). Compounds8a ‐8c, 11a, and11b show significant aurophilic interactions, which are related to their photoluminescence upon exposure to UV light. In the solid state, 11a and11b show green‐yellow emission, whereas8a ‐8c are non‐emissive. In solution under an argon atmosphere, all five compounds8a ‐8c as well as11a and11b show green‐yellow emission. The organogold complexes were characterized by multinuclear NMR spectroscopy, photoluminescence spectroscopy, single‐crystal X‐ray crystallography, as well as (TD‐)DFT calculations including real‐space bond indicators derived from atoms‐in‐molecules (AIM), the electron localization indicator (ELI‐D), and the non‐covalent interaction (NCI) index. Abstract : Switch on the light: The reaction of the homodinuclear (6‐diphenylpnicogenoacenaphth‐5‐yl)gold(I) species (6‐Ph2 P‐Ace‐5‐Au)2 (left) with Ph3 AsAuCl gives rise to the formation of the heterodinuclear gold(I) complex 6‐Ph2 P(AuCl)‐Ace‐5‐Au(AsPh3 ) (right), which shows green‐yellow photoluminescence.