Bruker SMART APEXII CCD diffractometer	4009 independent reflections
Radiation source: rotating anode	3171 reflections with I > 2σ(I)
graphite multilayer	Rint = 0.036
Detector resolution: 10.0 pixels mm-1	θmax = 27.5°, θmin = 2.2°
φ and ω scans	h = −11→12
Absorption correction: multi-scan (SADABS; Bruker, 2009)	k = −20→22
Tmin = 0.944, Tmax = 0.972	l = −14→14
16429 measured reflections