(4-Butyl-1-methyl-1,2,4-triazol-5-yl­idene)[(1,2,5,6-η)-cyclo­octa-1,5-diene](tri­phenyl­phosphane)iridium(I) tetra­fluorido­borate

A new triazole-based N-heterocyclic cationic carbene iridium(I) complex with a tetra­fluorido­borate counter-anion, [Ir(C(8)H(12))(C(7)H(13)N(3))(C(18)H(15)P)]BF(4), has been synthesized and structurally characterized. The Ir(I) atom of the cationic complex has an expected square-planar coordination environment with unexceptional bond lengths. There are several close F⋯H contacts between the cations and the anions in the range 2.36–2.58 Å, stabilizing the orientation of the out-sphere [BF(4) (−)] counter-anion. In the crystal, C—H⋯π(ring) inter­actions are observed that orient the phenyl rings of the tri­phenyl­phosphane ligands. [Image: see text]