Bruker APEXII CCD diffractometer	3945 independent reflections
Radiation source: fine-focus sealed tube	2911 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.022
Detector resolution: 0 pixels mm-1	θmax = 31.0°, θmin = 2.5°
ω and φ scans	h = −10→10
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	k = −12→12
Tmin = 0.897, Tmax = 0.917	l = −18→17
20157 measured reflections