Bruker SMART APEXII CCD area-detector diffractometer	2785 independent reflections
Radiation source: fine-focus sealed tube	1979 reflections with I > 2σ(I)
graphite	Rint = 0.064
φ and ω scans	θmax = 26.5°, θmin = 2.3°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −11→11
Tmin = 0.931, Tmax = 0.986	k = −14→14
10195 measured reflections	l = −16→16