Bruker APEXII CCD diffractometer	3984 independent reflections
Radiation source: fine-focus sealed tube	3230 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.019
φ and ω scans	θmax = 30.1°, θmin = 3.4°
Absorption correction: multi-scan (SADABS; Sheldrick, 2008b)	h = −17→17
Tmin = 0.89, Tmax = 0.97	k = −14→14
18385 measured reflections	l = −15→15