title: Crystal structure of 3-bromo-pyridine N-oxide.
abstract: In the title compound, C5H4BrNO, there are two mol-ecules in the asymmetric unit that are related by a pseudo-inversion center. The two independent mol-ecules are approximately planar, with an observed (ring-ring) angle of 5.49 (13)°. The crystal structure exhibits a herringbone pattern with the zigzag running along the b-axis direction. The least-squares plane containing the rings of both asymmetric molecules and the plane containing the symmetrically related mol-ecules make a plane-plane angle of 66.69 (10)°, which makes the bend of the herringbone pattern. The bromo group on one mol-ecule points to the bromo group on the neighboring mol-ecule, with a Br⋯Br inter-molecular distance of 4.0408 (16) Å. The herringbone layer-to-layer distance is 3.431 (4) Å with a shift of 1.742 (7) Å. There are no short contacts, hydrogen bonds, or π-π inter-actions.
authors.affiliation: Department of Chemistry and Physics, Armstrong State University, Savannah, GA 31419, USA.
authors.forename: Matthew G
authors.initials: MG
authors.lastname: Hutchinson
authors.affiliation: Department of Chemistry and Physics, Armstrong State University, Savannah, GA 31419, USA.
authors.forename: Will E
authors.initials: WE
authors.lastname: Lynch
authors.affiliation: Department of Chemistry and Physics, Armstrong State University, Savannah, GA 31419, USA.
authors.forename: Clifford W
authors.initials: CW
authors.lastname: Padgett
keywords: 3-bromo­pyridine N-oxide; crystal structure; herringbone pattern