Siemens SMART CCD area-detector diffractometer	2557 independent reflections
Radiation source: fine-focus sealed tube	1340 reflections with I > 2σ(I)
graphite	Rint = 0.077
φ and ω scans	θmax = 25.0°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −27→25
Tmin = 0.892, Tmax = 0.946	k = −6→10
11238 measured reflections	l = −16→15