Bruker Kappa APEXII CCD diffractometer	3217 independent reflections
Radiation source: fine-focus sealed tube	2493 reflections with I > 2σ(I)
graphite	Rint = 0.036
ω and φ scan	θmax = 24.9°, θmin = 1.4°
Absorption correction: multi-scan (SADABS; Bruker, 1999)	h = −35→35
Tmin = 0.942, Tmax = 0.971	k = −12→12
32882 measured reflections	l = −13→14