Bruker SMART 1000 CCD area-detector diffractometer	3930 independent reflections
Radiation source: fine-focus sealed tube	2267 reflections with I > 2σ(I)
graphite	Rint = 0.037
ω scans	θmax = 25.5°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 1997)	h = −11→11
Tmin = 0.872, Tmax = 0.927	k = −13→13
10953 measured reflections	l = −13→13