Table 2. Experimental details.

Crystal data
Chemical formula	C19H16N2O
M r	288.34
Crystal system, space group	Monoclinic, P21
Temperature (K)	100
a, b, c ()	7.704(6), 16.706(12), 11.617(9)
()	93.880(14)
V (3)	1492(2)
Z	4
Radiation type	Mo K
(mm1)	0.08
Crystal size (mm)	0.20 0.15 0.12
Data collection
Diffractometer	Bruker SMART APEX CCD
Absorption correction	Multi-scan (SADABS; Sheldrick, 2004 ▸)
T min, T max	0.986, 0.990
No. of measured, independent and observed [I > 2(I)] reflections	8013, 5245, 4091
R int	0.026
(sin /)max (1)	0.606
Refinement
R[F 2 > 2(F 2)], wR(F 2), S	0.045, 0.127, 0.97
No. of reflections	5242
No. of parameters	397
No. of restraints	1
H-atom treatment	H-atom parameters constrained
max, min (e 3)	0.12, 0.15

Computer programs: SMART and SAINT (Bruker, 2003 ▸), SIR97 (Altomare et al., 1999 ▸), SHELXL97 (Sheldrick, 2008 ▸), DIAMOND (Brandenberg Putz, 2006 ▸), Mercury (Macrae et al., 2008 ▸) and PLATON (Spek, 2009 ▸).