Bruker APEXII CCD area-detector diffractometer	2625 independent reflections
Radiation source: fine-focus sealed tube	1940 reflections with I > 2σ(I)
graphite	Rint = 0.023
φ and ω scans	θmax = 27.5°, θmin = 2.4°
Absorption correction: multi-scan (SADABS; Bruker, 2005)	h = −18→17
Tmin = 0.762, Tmax = 0.951	k = −10→13
8253 measured reflections	l = −8→10