Bruker Kappa APEXII diffractometer	5276 independent reflections
Radiation source: fine-focus sealed tube	3696 reflections with I > 2σ(I)
graphite	Rint = 0.023
ω and φ scans	θmax = 32.8°, θmin = 2.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −15→16
Tmin = 0.536, Tmax = 0.648	k = −23→24
21249 measured reflections	l = −12→11