Table 1. Experimental details.

Crystal data
Chemical formula	C25H18N4
M r	374.43
Crystal system, space group	Orthorhombic, P b c a
Temperature (K)	173
a, b, c (Å)	16.8662 (15), 12.8555 (11), 18.7561 (16)
V (Å3)	4066.8 (6)
Z	8
Radiation type	Mo Kα
μ (mm−1)	0.07
Crystal size (mm)	0.35 × 0.32 × 0.03
Data collection
Diffractometer	Bruker APEXII CCD
Absorption correction	Multi-scan (SADABS; Krause et al., 2015 ▸)
T min, T max	0.975, 0.998
No. of measured, independent and observed [I > 2σ(I)] reflections	23265, 4170, 2586
R int	0.057
(sin θ/λ)max (Å−1)	0.626
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.048, 0.125, 1.02
No. of reflections	4170
No. of parameters	264
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.39, −0.19

Computer programs: APEX2 and SAINT (Bruker, 2014 ▸), SHELXS97 (Sheldrick, 2008 ▸), SHELXL2018/3 (Sheldrick, 2015 ▸) and SHELXTL (Sheldrick, 2008 ▸).