Bruker APEXII CCD area-detector diffractometer	3438 independent reflections
Radiation source: fine-focus sealed tube	3224 reflections with I > 2σ(I)
graphite	Rint = 0.025
φ and ω scans	θmax = 35.0°, θmin = 2.1°
Absorption correction: multi-scan (SADABS; Bruker, 2005)	h = −31→25
Tmin = 0.825, Tmax = 0.964	k = −60→60
14166 measured reflections	l = −6→6