Enraf–Nonius CAD-4 diffractometer	2966 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.007
graphite	θmax = 25.6°, θmin = 1.8°
ω/2θ scans	h = −12→12
Absorption correction: for a sphere (Farrugia, 1999)	k = −4→13
Tmin = 0.303, Tmax = 0.367	l = −14→15
4856 measured reflections	3 standard reflections every 300 reflections
4745 independent reflections	intensity decay: 2.7%