Bruker APEX-II area-detector diffractometer	3635 independent reflections
Radiation source: fine-focus sealed tube	2152 reflections with I > 3σ(I)
Graphite monochromator	Rint = 0.058
φ and ω scans	θmax = 27.6°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 1999)	h = −32→31
Tmin = 0.846, Tmax = 0.918	k = −8→8
20634 measured reflections	l = −24→24