Bruker SMART APEX diffractometer	3008 independent reflections
Radiation source: fine-focus sealed tube	2887 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.026
Detector resolution: 8.33 pixels mm-1	θmax = 68.3°, θmin = 3.5°
combination of ω and φ–scans	h = −7→5
Absorption correction: numerical (SADABS; Sheldrick, 2008)	k = −20→19
Tmin = 0.720, Tmax = 0.964	l = −22→19
18292 measured reflections