Bruker APEXII CCD diffractometer	1043 independent reflections
Radiation source: fine-focus sealed tube	758 reflections with I > 2σ(I)
graphite	Rint = 0.031
φ and ω scans	θmax = 25.1°, θmin = 3.0°
Absorption correction: multi-scan (SADABS; Sheldrick, 2004)	h = −11→11
Tmin = 0.968, Tmax = 0.983	k = −6→10
5327 measured reflections	l = −16→16