Bruker Kappa APEXII CCD diffractometer	1542 independent reflections
Radiation source: fine-focus sealed tube	986 reflections with I > 2σ(I)
graphite	Rint = 0.058
Detector resolution: 7.40 pixels mm-1	θmax = 28.6°, θmin = 3.1°
ω scans	h = −13→14
Absorption correction: multi-scan (SADABS; Bruker, 2005)	k = −22→22
Tmin = 0.450, Tmax = 0.578	l = −3→5
4932 measured reflections