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The title compound, [Au 2 (C 26 H 24 P 2 ) 2 ](CF 3 SO 3 ) 2 ·2CH 3 CN, comprises a cyclic cation with a short intra­molecular aurophilic inter­action of 2.9220 (3) Å. The trifluoro­methane­sulfonate anions and acetonitrile solvent mol­ecules are located in channels formed by the complex cations that run along the crystallographic  c  axis. Each counter-anion is also engaged in a C—H⋯O contact with one of the methyl­ene H atoms of a 1,2-bis­(diphenyl­phosphino)ethane (dppe) ligand; another C—H⋯O contact involving an aromatic H atom is also observed.

acta crystallographica. section e

Bis[μ-1,2-bis(diphenylphosphino)ethane-κ2P:P′]digold(I)(Au—Au) bis(trifluoromethanesulfonate) acetonitrile disolvate