Bruker APEXII CCD area-detector diffractometer	3753 independent reflections
Radiation source: fine-focus sealed tube	3011 reflections with I > 2σ(I)
graphite	Rint = 0.039
φ and ω scans	θmax = 27.5°, θmin = 2.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 2007)	h = −10→10
Tmin = 0.915, Tmax = 0.975	k = −9→9
16109 measured reflections	l = −32→37