Bruker Kappa APEXII CCD diffractometer	8912 independent reflections
Radiation source: fine-focus sealed tube	4643 reflections with I > 2σ(I)
graphite	Rint = 0.092
Detector resolution: 8.3 pixels mm-1	θmax = 25.1°, θmin = 1.2°
ω scans	h = −12→11
Absorption correction: multi-scan (SADABS; Bruker, 2005)	k = −18→18
Tmin = 0.982, Tmax = 0.988	l = −20→20
34716 measured reflections