Refinement on F2	Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: full	All H-atom parameters refined
R[F2 > 2σ(F2)] = 0.041	w = 1/[σ2(Fo2) + (0.0317P)2] where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.092	(Δ/σ)max < 0.001
S = 0.80	Δρmax = 0.12 e Å−3
3703 reflections	Δρmin = −0.13 e Å−3
304 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: 0.0155 (15)
Secondary atom site location: difference Fourier map