Received 18 November 2008
In the title Schiff base, C18H22N4O, the hexahydropyrimidinyl ring adopts a chair conformation. The dihedral angle between the aromatic rings of the 4-(2-phenyldiazenyl)phenol unit is 15.7 (1)°. There is an intramolecular O-HN hydrogen bond between the hydroxyl group and an N atom of the hexahydropyimidinyl unit. Intermolecular N-HO and N-HN hydrogen bonds give rise to a layer structure.
Data collection: SMART (Bruker, 1998); cell refinement: SAINT-Plus (Bruker, 1998); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2001); software used to prepare material for publication: PLATON (Spek, 2003).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NG2518 ).
This work was supported by a grant from the University of Kerman and the University of Tehran.
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