Abstract

In the title compound, [Co(C5H4N3O2)2(H2O)2], the CoII atom is situated on a twofold rotation axis and is N,O-chelated by two 3-amino­pyrazine-2-carboxyl­ate anions and additionally bonded to the O atoms of two water mol­ecules, leading to a slightly distorted octa­hedral coordination environment. The crystal packing is dominated by inter­molecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonding involving the water mol­ecules and amino groups as donors and carboxyl­ate O atoms, as well as the non-coordinating heterocyclic N atoms as acceptors, resulting in a three-dimensional network. An intra­molecular N—H⋯O hydrogen bond is also observed.

Highlights

  • In the title compound, [Co(C5H4N3O2)2(H2O)2], the CoII atom is situated on a twofold rotation axis and is N,O-chelated by two 3-aminopyrazine-2-carboxylate anions and bonded to the O atoms of two water molecules, leading to a slightly distorted octahedral coordination environment

  • The crystal packing is dominated by intermolecular O—H O, O—H N and N—H O hydrogen bonding involving the water molecules and amino groups as donors and carboxylate

  • We are grateful to the personal of the LCATM laboratory, Université Oum El Bouaghi, Algeria, for their assistance

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Summary

Structure Reports

Berrah,a,b Ratiba Belhouasc and Hocine Merazigc a Laboratoire de Chimie Appliquée et Technologie des Matériaux LCATM, Université. Oum El Bouaghi, Algeria, bDépartement Sciences de la Matière, Faculté des Sciences. Exactes et Sciences de la Nature et de la Vie, Université Oum El Bouaghi, Algeria, and cUnité de Recherche de Chimie de l’Environnement et Moléculaire Structurale, CHEMS, Faculté des Sciences Exactes, Université Mentouri Constantine 25000, Algeria. In the title compound, [Co(C5H4N3O2)2(H2O)2], the CoII atom is situated on a twofold rotation axis and is N,O-chelated by two 3-aminopyrazine-2-carboxylate anions and bonded to the O atoms of two water molecules, leading to a slightly distorted octahedral coordination environment. The crystal packing is dominated by intermolecular O—H O, O—H N and N—H O hydrogen bonding involving the water molecules and amino groups as donors and carboxylate. An intramolecular N—H O hydrogen bond is observed

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