Bruker SMART 1000 CCD area-detector diffractometer	8181 independent reflections
Radiation source: fine-focus sealed tube	4988 reflections with I > 2σ(I)
graphite	Rint = 0.031
φ and ω scans	θmax = 29.0°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 1998)	h = −15→15
Tmin = 0.973, Tmax = 0.982	k = −16→16
17109 measured reflections	l = −19→19