Bruker SMART APEX diffractometer	1965 independent reflections
Radiation source: fine-focus sealed tube	1952 reflections with I > 2σ(I)
graphite	Rint = 0.011
ω scans	θmax = 27.5°, θmin = 3.0°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −8→8
Tmin = 0.858, Tmax = 0.949	k = −8→8
2247 measured reflections	l = −9→9