Siemens P4 diffractometer	Rint = 0.017
Radiation source: fine-focus sealed tube	θmax = 26.2°, θmin = 2.5°
graphite	h = −10→3
2θ/ω scans	k = −1→9
2470 measured reflections	l = −14→14
1595 independent reflections	3 standard reflections every 97 reflections
1276 reflections with I > 2σ(I)	intensity decay: 1%