A Gold(I)–Acetylene Complex Synthesised using Single‐Crystal Reactivity
Chloë Johnson, Daniel J. Storm, M. Arif Sajjad, Matthew R. Gyton, Simon B. Duckett, Stuart A. Macgregor, Andrew S. Weller, Miquel Navarro, Jesús Campos
Abstract
Abstract Using single‐crystal to single‐crystal solid/gas reactivity the gold(I) acetylene complex [Au( L1 )(η 2 ‐HC≡CH)][BAr F 4 ] is cleanly synthesized by addition of acetylene gas to single crystals of [Au( L1 )(CO)][BAr F 4 ] [ L1 =tris‐2‐(4,4′‐di‐tert‐butylbiphenyl)phosphine, Ar F =3,5‐(CF 3 ) 2 C 6 H 3 ]. This simplest gold‐alkyne complex has been characterized by single crystal X‐ray diffraction, solution and solid‐state NMR spectroscopy and periodic DFT. Bonding of HC≡CH with [Au( L1 )] + comprises both σ‐donation and π‐backdonation with additional dispersion interactions within the cavity‐shaped phosphine.