Bruker–Nonius KappaCCD area-detector diffractometer	3708 independent reflections
Radiation source: fine-focus sealed tube	2064 reflections with I > 2σ(I)
graphite	Rint = 0.079
Detector resolution: 9.091 pixels mm-1	θmax = 27.5°, θmin = 1.8°
φ and ω scans to fill the Ewald sphere	h = −9→9
Absorption correction: integration (Gaussian; Coppens, 1970)	k = −13→13
Tmin = 0.946, Tmax = 0.983	l = −15→15
10764 measured reflections