A straightforward synthetic route to symmetric bis(acetylide) metallates of the coinage metals

Homoleptic Alkynylphosphonium Au(I) Complexes as Push–Pull Phosphorescent Emitters

“…Both complexes adopt the expected linear configuration, typical of mononuclear bis-alkynyl Au(I) complexes described in the literature. 28,29,39,40 The C−Au−C bond lengths and angles for 1 and 2B also correspond to the published literature data. 29,39,41,42 However, the presence of the bulky −PR 3 substituent leads to the slight bending of the whole molecule compared to the bis-phenylalkynyl Au(I) complexes.…”

“…28,29,39,40 The C−Au−C bond lengths and angles for 1 and 2B also correspond to the published literature data. 29,39,41,42 However, the presence of the bulky −PR 3 substituent leads to the slight bending of the whole molecule compared to the bis-phenylalkynyl Au(I) complexes. 39,43 The packing mode of 1 and 2B demonstrates parallel orientation, surprisingly, with no evidence of ππ or aurophilic interactions.…”

Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure–Property Relationships and Applications

“…Several groups have synthesized and investigated the properties of Au­(I) σ-acetylide polymers but faced difficulties during handling due to their low solubility in organic solvents. − Despite these challenges, researchers continue to explore new synthetic methodologies and techniques to stabilize these materials under ambient condition. For example, Seifert et al reported the synthesis and structural characterization of bis­(acetylide) metallates­(I) of the coinage metals with the general formula [K­(THF) n (18-crown-6)]­[R–CC–M–CC–R] (M = Cu, Ag, and Au) with varying substituents R (R = Fc, Ph, and t Bu) (Chart , Figure , panels a–c, 278 ). Prior to this, Wu and co-workers noticed the unprecedented formation of Ag-incorporated oligo-ynes on an Ag(100) surface.…”

“…Solid state structures of 278 M = Cu (a), Ag (b), and Au (c) alkynyls complexes. Reproduced with permission from ref . Copyright 2018 Elsevier Ltd. (d) Solid state structure of 279 .…”

A boron, nitrogen-containing heterocyclic carbene (BNC) as a redox active ligand: synthesis and characterization of a lithium BNC-aurate complex

“…1 Remarkably, the most electronegative metal, gold, shows very limited structural diversity in forming organometallic aurate complexes in comparison with earlier d-block metals. 2 Since the first report on (alkyl)aurate complexes over a century ago, 3,4 isolated structures 5 bearing carbon-based ligands have been restricted to cyano-, 6,7 alkyl-, 8 aryl- [9][10][11] alkynyl- 12 and fluorinated alkyl-/aryl-/pyridyl groups, [13][14][15] mostly σ-withdrawing functionalities (Chart 1A). Only more recently, electropositive group 13 based organo-main group ligands have been used to access and stabilize electron-rich gold centers as aurate and auride complexes.…”