Bruker APEXII CCD detector diffractometer	3281 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.023
graphite	θmax = 26.0°, θmin = 2.2°
ω and φ scans	h = −10→9
23139 measured reflections	k = −12→12
3629 independent reflections	l = −14→14