Bruker Kappa APEXII CCD diffractometer	2719 independent reflections
Radiation source: fine-focus sealed tube	1972 reflections with I > 2σ(I)
graphite	Rint = 0.037
φ and ω scans	θmax = 28.3°, θmin = 2.7°
Absorption correction: multi-scan (SADABS; Bruker, 2001)	h = −13→13
Tmin = 0.492, Tmax = 0.771	k = −12→7
12176 measured reflections	l = −14→14