Bruker APEXII CCD diffractometer	1935 independent reflections
Radiation source: fine-focus sealed tube	1474 reflections with I > 2σ(I)
graphite	Rint = 0.036
φ and ω scans	θmax = 25.5°, θmin = 2.7°
Absorption correction: multi-scan (SADABS; Bruker, 2004)	h = −10→11
Tmin = 0.976, Tmax = 0.979	k = −11→14
5880 measured reflections	l = −11→11