Table 2. Experimental details.

Crystal data
Chemical formula	C21H16N2O
M r	312.36
Crystal system, space group	Orthorhombic, F2d d
Temperature (K)	150
a, b, c ()	8.1653(3), 27.6113(11), 29.6818(13)
V (3)	6691.9(5)
Z	16
Radiation type	Mo K
(mm1)	0.08
Crystal size (mm)	0.55 0.29 0.24
Data collection
Diffractometer	Bruker APEXII
Absorption correction	Multi-scan (SADABS; Bruker, 2006 ▸)
T min, T max	0.884, 0.982
No. of measured, independent and observed [I > 2(I)] reflections	8049, 3350, 3036
R int	0.032
(sin /)max (1)	0.649
Refinement
R[F 2 > 2(F 2)], wR(F 2), S	0.039, 0.094, 1.06
No. of reflections	3350
No. of parameters	217
No. of restraints	1
H-atom treatment	H-atom parameters constrained
max, min (e 3)	0.18, 0.16

Computer programs: APEX2 and SAINT (Bruker, 2006 ▸), SIR97 (Altomare et al., 1999 ▸), SHELXL2014 (Sheldrick, 2008 ▸), Mercury (Macrae et al., 2008 ▸), CRYSCAL (T. Roisnel, local program), enCIFer (Allen et al., 2004 ▸), PLATON (Spek, 2009 ▸), WinGX (Farrugia, 2012 ▸) and publCIF (Westrip 2010 ▸).