title: [2-Butyl-4-(4-tert-butyl-benz-yl)-1,2,4-triazol-3-yl-idene]chlorido[(1,2,5,6-η)-cyclo-octa-1,5-diene]iridium(I).
abstract: In the title compound, [IrCl(C(8)H(12))(C(17)H(25)N(3))], the Ir(I) ion has a distorted square-planar coordination geometry. The N-heterocyclic carbene ligand has an extended S-shaped conformation. The butyl group was refined using a two-part 1:1 disorder model. In the crystal, three unique weak C-H⋯Cl contacts are present. Two of these form a motif described as R(2) (1)(6) in graph-set notation, while a third forms an R(2) (2)(8) motif about a crystallographic inversion center. The result is a chain structure which extends parallel to the crystallographic a axis.
authors.forename: Gary S
authors.initials: GS
authors.lastname: Nichol
authors.forename: David P
authors.initials: DP
authors.lastname: Walton
authors.forename: Laura J
authors.initials: LJ
authors.lastname: Anna
authors.forename: Edward
authors.initials: E
authors.lastname: Rajaseelan