Remarkable Conversion of 2-Thioxo-2,3-dihydroquinazolin-4(1H)-ones into the Corresponding Quinazoline-2,4(1H,3H)-diones: Spectroscopic Analysis and X-Ray Crystallography

Table 5

Important torsion angles of the two independent molecules of the crystal structure 11 (°).

Atom 1	Atom 2	Atom 3	Atom 4	Angle (°)
C1A	N2A	C10A	C11A	−113.8 (3)
C1B	N2B	C10B	C11B	64.5 (3)
C1A	N2A	C10A	C15A	67.6 (3)
C1B	N2B	C10B	C15B	−116.5 (3)
C8A	N2A	C10A	C11A	70.4 (3)
C8B	N2B	C10B	C11B	−111.8 (3)
C8A	N2A	C10A	C15A	−108.2 (3)
C8B	N2B	C10B	C15B	67.2 (3)