Bruker SMART APEXII CCD area-detector diffractometer	4866 independent reflections
Radiation source: fine-focus sealed tube	3803 reflections with I > 2σ(I)
graphite	Rint = 0.036
Detector resolution: 8.33 pixels mm-1	θmax = 30.0°, θmin = 2.1°
ω scans	h = −7→7
Absorption correction: multi-scan (SADABS; Bruker, 2005)	k = −26→26
Tmin = 0.331, Tmax = 0.714	l = −22→22
29994 measured reflections