Bruker SMART APEX CCD diffractometer	2646 independent reflections
Radiation source: fine-focus sealed tube	2052 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.050
φ and ω scans	θmax = 27.5°, θmin = 3.0°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −17→17
Tmin = 0.970, Tmax = 0.993	k = −9→9
10739 measured reflections	l = −13→15