Bruker APEXII CCD diffractometer	2264 independent reflections
Radiation source: fine-focus sealed tube	2151 reflections with I > 2σ(I)
graphite	Rint = 0.035
φ and ω scans	θmax = 30.5°, θmin = 2.4°
Absorption correction: multi-scan (SADABS; Bruker, 1998)	h = −48→44
Tmin = 0.945, Tmax = 0.966	k = −10→10
7265 measured reflections	l = −9→7