Bruker APEX CCD diffractometer	8037 independent reflections
Radiation source: fine-focus sealed tube	3602 reflections with I > 2σ(I)
graphite	Rint = 0.105
φ and ω scans	θmax = 25.1°, θmin = 1.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −25→25
Tmin = 0.45, Tmax = 0.69	k = −9→9
22806 measured reflections	l = −32→31