Bruker SMART CCD area-detector diffractometer	4078 independent reflections
Radiation source: fine-focus sealed tube	3703 reflections with I > 2σ(I)
graphite	Rint = 0.037
φ and ω scans	θmax = 30.5°, θmin = 2.9°
Absorption correction: multi-scan (SADABS; Bruker, 2004)	h = −34→34
Tmin = 0.671, Tmax = 0.846	k = −18→18
33484 measured reflections	l = −25→25