Rigaku Mercury CCD area-detector diffractometer	3370 independent reflections
Radiation source: rotating-anode X-ray tube	2773 reflections with I > 2σ(I)
graphite	Rint = 0.033
Detector resolution: 14.7059 pixels mm-1	θmax = 27.5°, θmin = 3.0°
φ and ω scans	h = −10→10
Absorption correction: numerical (NUMABS; Higashi, 1999)	k = −9→5
Tmin = 0.988, Tmax = 0.997	l = −33→25
11405 measured reflections