Bruker APEXII CCD area detector diffractometer	3431 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.038
phi and ω scans	θmax = 28.8°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 2003)	h = −28→40
Tmin = 0.735, Tmax = 0.860	k = −41→39
23938 measured reflections	l = −10→10
4924 independent reflections