Bruker APEX DUO CCD area-detector diffractometer	4947 independent reflections
Radiation source: fine-focus sealed tube	3922 reflections with I > 2σ(I)
graphite	Rint = 0.023
φ and ω scans	θmax = 32.5°, θmin = 1.3°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −8→8
Tmin = 0.963, Tmax = 0.990	k = −12→11
12709 measured reflections	l = −22→23