Bruker SMART CCD area-detector diffractometer	1057 independent reflections
Radiation source: fine-focus sealed tube	867 reflections with I > 2σ(I)
graphite	Rint = 0.048
φ and ω scans	θmax = 25.0°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2001)	h = −13→11
Tmin = 0.827, Tmax = 0.894	k = −6→6
2778 measured reflections	l = −8→11