Bruker SMART CCD area-detector diffractometer	2394 independent reflections
Radiation source: fine-focus sealed tube	1671 reflections with I > 2σ(I)
graphite	Rint = 0.058
φ and ω scans	θmax = 25.1°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2002)	h = −10→10
Tmin = 0.965, Tmax = 0.968	k = −27→26
7173 measured reflections	l = −9→9