Bruker SMART APEX CCD area-detector diffractometer	2457 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.041
graphite	θmax = 23.7°, θmin = 1.9°
ω scans	h = −12→12
18613 measured reflections	k = −15→15
3269 independent reflections	l = −11→16