title: Crystal structure of 4-(di-methyl-amino)-pyridinium cis-di-aqua-bis-(oxalato-κ(2) O,O')ferrate(III) hemihydrate.
abstract: The Fe(III) ions in the hybrid title salt, (C7H11N2)[Fe(C2O4)2(H2O)2]·0.5H2O, show a distorted octa-hedral coordination environment, with four O atoms from two chelating oxalate dianions and two O atoms from two cis aqua ligands. The average Fe-O(oxalate) bond length [2.00 (2) Å] is shorter than the average Fe-O(water) bond length [2.027 (19) Å]. The ionic components are connected via inter-molecular N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network.
authors.affiliation: Department of Inorganic Chemistry, University of Yaounde 1, POB 812 Yaounde, Cameroon.
authors.forename: Edith Dimitri
authors.initials: ED
authors.lastname: Djomo
authors.affiliation: Unité de Catalyse et de Chimie du Solide, UMR 8181, École Nationale Supérieure de Chimie de Lille, Université Lille-1, 59650 Villeneuve d'Ascq Cedex, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Capet
authors.affiliation: Department of Inorganic Chemistry, University of Yaounde 1, POB 812 Yaounde, Cameroon.
authors.forename: Justin
authors.initials: J
authors.lastname: Nenwa
authors.affiliation: Department of Inorganic Chemistry, University of Yaounde 1, POB 812 Yaounde, Cameroon.
authors.forename: Michel M
authors.initials: MM
authors.lastname: Bélombé
authors.affiliation: UFR de Physique, Université Lille-1, 59650 Villeneuve d'Ascq Cedex, France.
authors.forename: Michel
authors.initials: M
authors.lastname: Foulon
keywords: 4-(di­methyl­amino)­pyridine; bis­(oxalate)ferrate(III) complex; crystal structure; hybrid salt; hydrogen bonding