Bruker SMART APEX CCD area-detector diffractometer	1351 independent reflections
Radiation source: fine-focus sealed tube	786 reflections with I > 2σ(I)
graphite	Rint = 0.017
φ and ω scans	θmax = 29.0°, θmin = 3.3°
Absorption correction: multi-scan (SADABS; Sheldrick 1996)	h = −5→4
Tmin = 0.962, Tmax = 0.971	k = −8→5
2173 measured reflections	l = −17→17