Rigaku R-AXIS RAPID diffractometer	1807 independent reflections
Radiation source: fine-focus sealed tube	1451 reflections with I > 2σ(I)
graphite	Rint = 0.041
ω scan	θmax = 27.4°, θmin = 3.1°
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	h = −6→6
Tmin = 0.887, Tmax = 0.970	k = −7→7
7733 measured reflections	l = −34→33