Bruker APEXII area-detector diffractometer	4741 independent reflections
Radiation source: fine-focus sealed tube	4175 reflections with I > 2σ(I)
graphite	Rint = 0.021
φ and ω scans	θmax = 25.0°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2004)	h = −11→11
Tmin = 0.501, Tmax = 0.592	k = −15→16
16112 measured reflections	l = −23→23