Bruker SMART CCD area-detector diffractometer	2983 independent reflections
Radiation source: fine-focus sealed tube	1404 reflections with I > 2σ(I)
graphite	Rint = 0.070
φ and ω scans	θmax = 27.2°, θmin = 1.4°
Absorption correction: numerical (SADABS; Bruker, 2003)	h = −15→14
Tmin = 0.861, Tmax = 0.865	k = −4→4
11154 measured reflections	l = −38→37