Bruker SMART APEXII CCD area-detector diffractometer	9357 independent reflections
Radiation source: rotating anode with a mirror focusing unit	6405 reflections with I > 2σ(I)
graphite	Rint = 0.047
φ and ω scans	θmax = 27.1°, θmin = 2.2°
Absorption correction: empirical (using intensity measurements) (SADABS; Sheldrick, 1996)	h = −23→19
Tmin = 0.717, Tmax = 0.986	k = −16→16
23329 measured reflections	l = −24→24