Bruker SMART CCD area-detector diffractometer	3539 independent reflections
Radiation source: fine-focus sealed tube	2132 reflections with I > 2σ(I)
graphite	Rint = 0.030
ω scans	θmax = 27.0°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 2001)	h = −17→17
Tmin = 0.630, Tmax = 0.672	k = −8→8
9539 measured reflections	l = −23→20