Table 4. Experimental details.

Crystal data
Chemical formula	C22H14Cl4N4
M r	476.17
Crystal system, space group	Monoclinic, P21/c
Temperature (K)	296
a, b, c (Å)	16.0289 (10), 13.1213 (8), 11.1286 (7)
β (°)	108.073 (2)
V (Å3)	2225.1 (2)
Z	4
Radiation type	Mo Kα
μ (mm−1)	0.55
Crystal size (mm)	0.44 × 0.26 × 0.12
Data collection
Diffractometer	Bruker APEXII CCD
Absorption correction	Multi-scan (SADABS; Krause et al., 2015 ▸)
T min, T max	0.621, 0.745
No. of measured, independent and observed [I > 2σ(I)] reflections	24362, 4399, 3193
R int	0.044
(sin θ/λ)max (Å−1)	0.626
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.046, 0.112, 1.01
No. of reflections	4399
No. of parameters	271
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.24, −0.25

Computer programs: APEX3 and SAINT (Bruker, 2007 ▸), SHELXT2016/6 (Sheldrick, 2015a ▸), SHELXL2016/6 (Sheldrick, 2015b ▸), ORTEP-3 for Windows (Farrugia, 2012 ▸) and PLATON (Spek, 2020 ▸).