Bruker SMART APEXII CCD area-detector diffractometer	2371 independent reflections
Radiation source: fine-focus sealed tube	1958 reflections with I > 2σ(I)
graphite	Rint = 0.026
φ and ω scans	θmax = 30.1°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −5→6
Tmin = 0.940, Tmax = 0.994	k = −26→31
7806 measured reflections	l = −10→10