| Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
| Least-squares matrix: full | H atoms treated by a mixture of independent and constrained refinement |
| R[F2 > 2σ(F2)] = 0.038 | w = 1/[σ2(Fo2) + (0.0556P)2 + 0.2388P] where P = (Fo2 + 2Fc2)/3 |
| wR(F2) = 0.111 | (Δ/σ)max = 0.004 |
| S = 1.04 | Δρmax = 0.19 e Å−3 |
| 2146 reflections | Δρmin = −0.28 e Å−3 |
| 179 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
| Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0200 (13) |
| Secondary atom site location: difference Fourier map |