Bruker X8 APEXII diffractometer	2592 independent reflections
Radiation source: fine-focus sealed tube	1097 reflections with I > 2σ(I)
graphite	Rint = 0.082
φ and ω scans	θmax = 25.0°, θmin = 2.5°
Absorption correction: multi-scan (SADABS; Bruker, 2008)	h = −4→4
Tmin = 0.591, Tmax = 0.914	k = −16→16
4633 measured reflections	l = −19→19