title: 2-(5,6-Dihydro-benzimidazo[1,2-c]quinazolin-6-yl)-5-meth-oxy-phenol.
abstract: In the title quinazoline derivative, C(21)H(17)N(3)O(2), the benzimidazole unit makes dihedral angles of 8.29 (5) and 81.79 (5)° with the benzene rings of the quinazoline and meth-oxy-phenol units, respectively. The nitro-gen-containing six-membered ring adopts a half-chair conformation. In the crystal, the mol-ecules are linked through O-H⋯N hydrogen bonds into screw chains along the b axis; adjacent chains are further connected by N-H⋯O hydrogen bonds, thereby forming a two-dimensional network lying parallel to the bc plane. Weak C-H⋯π and π⋯π inter-actions with centroid-centroid distances of 3.5258 (8) and 3.7184 (7) Å are present and N⋯O [2.6816 (15) and 3.0519 (15) Å] short contacts also occur.
authors: Naser Eltaher
authors: NE
authors: Eltayeb
authors: Siang Guan
authors: SG
authors: Teoh
authors: Suchada
authors: S
authors: Chantrapromma
authors: Hoong-Kun
authors: HK
authors: Fun