Bruker APEXII CCD diffractometer	3475 independent reflections
Radiation source: fine-focus sealed tube	3195 reflections with I > 2σ(I)
graphite	Rint = 0.043
ω scans	θmax = 33.1°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 2006)	h = −34→33
Tmin = 0.615, Tmax = 0.91	k = −9→8
9889 measured reflections	l = −12→14