Bruker SMART APEXII CCD diffractometer	4744 independent reflections
Radiation source: fine-focus sealed tube	3744 reflections with I > 2σ(I)
graphite	Rint = 0.027
φ and ω scans	θmax = 32.3°, θmin = 2.6°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −16→15
Tmin = 0.950, Tmax = 0.992	k = −17→17
17061 measured reflections	l = −14→17