Bruker APEXII CCD diffractometer	5384 reflections with I > 2σ(I)
φ and ω scans	Rint = 0.074
Absorption correction: multi-scan (SADABS; Sheldrick, 2003)	θmax = 28.3°, θmin = 2.9°
Tmin = 0.635, Tmax = 0.746	h = −8→9
36728 measured reflections	k = −19→21
9449 independent reflections	l = −43→42