Stoe four-circle diffractometer	Rint = 0.023
Radiation source: fine-focus sealed tube	θmax = 26.0°, θmin = 2.5°
graphite	h = −7→7
ω–2θ scans	k = −9→1
4234 measured reflections	l = −21→21
3462 independent reflections	3 standard reflections every 100 reflections
2941 reflections with I > 2σ(I)	intensity decay: 0.4%