Bruker APEXII diffractometer	2105 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.050
graphite	θmax = 26.5°, θmin = 2.1°
θ/2φ scans	h = −14→14
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	k = −10→10
Tmin = 0.963, Tmax = 0.986	l = −16→14
27844 measured reflections	4 standard reflections every 30 min
2516 independent reflections	intensity decay: 0.0%