Table 2. Experimental details.

Crystal data
Chemical formula	C24H8F4N2O8
M r	528.32
Crystal system, space group	Monoclinic, P21/c
Temperature (K)	173
a, b, c (Å)	17.100 (6), 4.744 (2), 13.662 (4)
β (°)	106.83 (2)
V (Å3)	1060.8 (7)
Z	2
Radiation type	Mo Kα
μ (mm−1)	0.15
Crystal size (mm)	0.40 × 0.15 × 0.01
Data collection
Diffractometer	Bruker–Nonius KappaCCD
Absorption correction	Multi-scan (SADABS; Bruker, 2001 ▸)
T min, T max	0.931, 0.986
No. of measured, independent and observed [I > 2σ(I)] reflections	7948, 2396, 1440
R int	0.061
(sin θ/λ)max (Å−1)	0.650
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.048, 0.120, 1.05
No. of reflections	2396
No. of parameters	176
No. of restraints	1
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.26, −0.32

Computer programs: COLLECT (Nonius, 1999 ▸), DIRAX/LSQ (Duisenberg et al., 2000 ▸), EVALCCD (Duisenberg et al., 2003 ▸), SIR97 (Altomare et al., 1999 ▸), SHELXL2016 (Sheldrick, 2015 ▸), ORTEP-3 for Windows and WinGX (Farrugia, 2012 ▸) and Mercury (Macrae et al., 2008 ▸).