Bruker SMART 4K CCD area-detector diffractometer	4713 independent reflections
Radiation source: fine-focus sealed tube	3715 reflections with I > 2σ(I)
graphite	Rint = 0.031
φ and ω scans	θmax = 28.3°, θmin = 2.2°
Absorption correction: multi-scan (SADABS; Sheldrick, 2003)	h = −14→14
Tmin = 0.972, Tmax = 0.991	k = −13→12
14116 measured reflections	l = −23→22