Bruker APEXII CCD diffractometer	2075 reflections with I > 2σ(I)
Radiation source: sealed tube	Rint = 0.030
graphite	θmax = 28.3°, θmin = 3.4°
φ and ω scans	h = −14→14
12714 measured reflections	k = −6→8
3365 independent reflections	l = −26→26