Nonius KappaCCD diffractometer	1910 independent reflections
Radiation source: fine-focus sealed tube	1769 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.060
CCD scans	θmax = 27.4°, θmin = 3.0°
Absorption correction: empirical (using intensity measurements) (DENZO/SCALEPACK; Otwinowski & Minor, 1997)	h = −4→7
Tmin = 0.243, Tmax = 0.639	k = −9→7
3294 measured reflections	l = −25→20