Bruker SMART APEXII CCD diffractometer	4956 independent reflections
Radiation source: fine-focus sealed tube	3416 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.048
φ and ω scans	θmax = 30.6°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −23→23
Tmin = 0.868, Tmax = 0.972	k = −7→7
16728 measured reflections	l = −25→29