title: Crystal structure of 2-cyano-1-methyl-pyridinium perchlorate.
abstract: The asymmetric unit of the title salt, C7H7N2 (+)·ClO4 (-), comprises two independent formula units. The solid-state structure comprises corrugated layers of cations and of anions, approximately parallel to (010). The supra-molecular layers are stabilized and connected by C-H⋯O hydrogen bonding to consolidate a three-dimensional architecture. A close pyridin-ium-perchlorate N⋯O contact [2.867 (5) Å] is noted. The crystal was refined as an inversion twin.
authors.affiliation: Department of Chemistry, Loyola University, New Orleans, LA 70118, USA.
authors.forename: Vu D
authors.initials: VD
authors.lastname: Nguyen
authors.affiliation: Department of Chemistry, Loyola University, New Orleans, LA 70118, USA.
authors.forename: Cameron A
authors.initials: CA
authors.lastname: McCormick
authors.affiliation: Department of Chemistry, Tulane University, New Orleans, LA 70118, USA.
authors.forename: Joel T
authors.initials: JT
authors.lastname: Mague
authors.affiliation: Department of Chemistry, Loyola University, New Orleans, LA 70118, USA.
authors.forename: Lynn V
authors.initials: LV
authors.lastname: Koplitz
keywords: crystal structure; hydrogen bonding; perchlorate; pyridinium; salt