Table 4. Experimental details.

Crystal data
Chemical formula	C17H14Cl2N4
M r	345.22
Crystal system, space group	Monoclinic, P21/n
Temperature (K)	100
a, b, c (Å)	12.396 (3), 6.5280 (7), 20.758 (3)
β (°)	104.39 (2)
V (Å3)	1627.1 (5)
Z	4
Radiation type	Synchrotron, λ = 0.79475 Å
μ (mm−1)	0.54
Crystal size (mm)	0.10 × 0.08 × 0.05
Data collection
Diffractometer	Rayonix SX165 CCD
Absorption correction	Multi-scan (SCALA; Evans, 2006 ▸)
Tmin, Tmax	0.939, 0.966
No. of measured, independent and observed [I > 2σ(I)] reflections	21540, 3712, 2913
R int	0.066
(sin θ/λ)max (Å−1)	0.648
Refinement
R[F2 > 2σ(F 2)], wR(F 2), S	0.040, 0.110, 1.06
No. of reflections	3712
No. of parameters	211
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.34, −0.36

Computer programs: Marccd(Doyle, 2011 ▸), iMosflm (Battye et al., 2011 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL (Sheldrick, 2015b ▸), ORTEP-3 for Windows (Farrugia, 2012 ▸) and PLATON (Spek, 2020 ▸).