Bruker Kappa APEXII CCD area-detector diffractometer	3723 independent reflections
Radiation source: fine-focus sealed tube	3365 reflections with I > 2σ(I)
graphite	Rint = 0.029
φ and ω scans	θmax = 28.6°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 2005)	h = −8→8
Tmin = 0.750, Tmax = 0.877	k = −22→21
13495 measured reflections	l = −17→15