Bruker SMART CCD diffractometer	5867 independent reflections
Radiation source: fine-focus sealed tube	4401 reflections with I > 2σ(I)
graphite	Rint = 0.065
ω scans	θmax = 32.8°, θmin = 2.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 2003)	h = −43→43
Tmin = 0.368, Tmax = 0.703	k = −12→12
27788 measured reflections	l = −21→21