Bruker SMART CCD area-detector diffractometer	3466 independent reflections
Radiation source: fine-focus sealed tube	1184 reflections with I > 2σ(I)
graphite	Rint = 0.115
ω scans	θmax = 27.0°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Sheldrick, 2008)	h = −8→8
Tmin = 0.980, Tmax = 0.983	k = −22→22
12876 measured reflections	l = −17→17