title: 6-(4-Bromo-phen-yl)-2-eth-oxy-4-(4-ethoxy-phen-yl)nicotinonitrile.
abstract: The mol-ecule of the title nicotinonitrile derivative, C(22)H(19)BrN(2)O(2), is non-planar, the central pyridine ring making dihedral angles of 7.34 (14) and 43.56 (15)° with the 4-bromo-phenyl and 4-ethoxy-phenyl rings, respectively. The eth-oxy group of the 4-ethoxy-phenyl is slightly twisted from the attached benzene ring [C-O-C-C = 174.2 (3)°], whereas the eth-oxy group attached to the pyridine ring is in a (+)syn-clinal conformation [C-O-C-C = 83.0 (3)°]. A weak intra-molecular C-H⋯N inter-action generates an S(5) ring motif. In the crystal structure, the mol-ecules are linked by weak inter-molecular C-H⋯N inter-actions into screw chains along the b axis. These chains stacked along the a axis. π-π inter-actions with centroid-centroid distances of 3.8724 (16) and 3.8727 (16) Å are also observed.
authors.forename: Suchada
authors.initials: S
authors.lastname: Chantrapromma
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Thitipone
authors.initials: T
authors.lastname: Suwunwong
authors.forename: Mahesh
authors.initials: M
authors.lastname: Padaki
authors.forename: Arun M
authors.initials: AM
authors.lastname: Isloor