Bruker SMART 1000 diffractometer	2262 independent reflections
Radiation source: fine-focus sealed tube	1651 reflections with I > 2σ(I)
graphite	Rint = 0.034
φ and ω scans	θmax = 25.0°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −20→25
Tmin = 0.827, Tmax = 0.889	k = −8→8
6295 measured reflections	l = −19→17