Bruker SMART APEXII CCD diffractometer	6681 independent reflections
Radiation source: fine-focus sealed tube	5130 reflections with I > 2σ(I)
graphite	Rint = 0.039
φ and ω scans	θmax = 30.0°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −13→14
Tmin = 0.896, Tmax = 0.968	k = −30→28
26235 measured reflections	l = −16→13