title: Crystal structure of (ferrocenylmeth-yl)di-methyl-ammonium hydrogen oxalate.
abstract: The crystal structure of the title salt, [Fe(C5H5)(C8H13N)](HC2O4), consists of discrete (ferrocenylmeth-yl)di-methyl-ammonium cations and hydrogen oxalate anions. The anions are connected through a strong O-H⋯O hydrogen bond, forming linear chains running parallel to [100]. The cations are linked to the anions through bifurcated N-H⋯(O,O') hydrogen bonds. Weak C-H⋯π inter-actions between neighbouring ferrocenyl moieties are also observed.
authors.affiliation: Laboratoire des Produits Naturels, Département de Chimie, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Sénégal.
authors.forename: Mamadou
authors.initials: M
authors.lastname: Ndiaye
authors.affiliation: Laboratoire des Produits Naturels, Département de Chimie, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Sénégal.
authors.forename: Abdoulaye
authors.initials: A
authors.lastname: Samb
authors.affiliation: Laboratoire de Chimie Minérale et Analytique, Département de Chimie, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Sénégal.
authors.forename: Libasse
authors.initials: L
authors.lastname: Diop
authors.affiliation: Département de Chimie, Université de Montréal, 2900 Boulevard Édouard-Montpetit, Montréal, Québec, H3C 3J7, Canada.
authors.forename: Thierry
authors.initials: T
authors.lastname: Maris
keywords: (ferrocenylmeth­yl)di­methyl­ammonium; C—H⋯π inter­actions; bifurcated hydrogen bond; crystal structure; hydrogen oxalate