Bruker SMART APEXII area-detector diffractometer	4398 independent reflections
Radiation source: fine-focus sealed tube	2725 reflections with I > 2σ(I)
graphite	Rint = 0.035
ω and φ scans	θmax = 28.5°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2008)	h = −27→28
Tmin = 0.499, Tmax = 0.596	k = −19→19
17094 measured reflections	l = −18→18