Enraf–Nonius CAD-4 diffractometer	Rint = 0.023
Radiation source: fine-focus sealed tube	θmax = 25.3º
Monochromator: graphite	θmin = 1.9º
T = 293(2) K	h = −9→9
ω/2θ scans	k = 0→17
Absorption correction: ψ scan(North et al., 1968)	l = 0→17
Tmin = 0.970, Tmax = 0.990	3 standard reflections
3273 measured reflections	every 200 reflections
3032 independent reflections	intensity decay: 1%
1955 reflections with I > 2σ(I)