Bruker Kappa APEXII CCD diffractometer	6176 independent reflections
Radiation source: fine–focus sealed tube	5280 reflections with I > 2σ(I)
graphite	Rint = 0.019
ω scans	θmax = 31.3°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −32→21
Tmin = 0.658, Tmax = 0.746	k = −16→16
15796 measured reflections	l = −25→24