Rigaku R-AXIS RAPID diffractometer	5151 independent reflections
Radiation source: fine-focus sealed tube	3505 reflections with I > 2σ(I)
graphite	Rint = 0.046
ω scans	θmax = 27.5°, θmin = 3.1°
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	h = −8→9
Tmin = 0.863, Tmax = 0.909	k = −45→45
21869 measured reflections	l = −11→11