Refinement on F2	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Hydrogen site location: difference Fourier map
R[F > 3σ(F)] = 0.041	H atoms treated by a mixture of independent and constrained refinement
wR(F) = 0.100	Weighting scheme based on measured s.u.'s w = 1/(σ2(I) + 0.0004I2)
S = 1.64	(Δ/σ)max = 0.013
2953 reflections	Δρmax = 0.21 e Å−3
229 parameters	Δρmin = −0.18 e Å−3
0 restraints	Extinction correction: B-C type 1 Lorentzian isotropic (Becker & Coppens, 1974)
46 constraints	Extinction coefficient: 740 (130)