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Updated: May 10, 2026

Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Bis(3-amino-pyrazine-2-carboxyl-ato-κ(2) N (1),O)di-aqua-nickel(II) dihydrate
Rafika Bouchene1, Amina Khadri, Sofiane Bouacida
1Laboratoire de Chimie Appliquée et Technologie des Matériaux LCATM, Université Oum El Bouaghi, Algeria ; Département Sciences de la Matière, Faculté des Sciences Exactes et Sciences de la Nature et de la Vie, Université Oum El Bouaghi, Algeria.
Abstract:
In the title compound, [Ni(C5H4N3O2)2(H2O)2]·2H2O, the Ni(II) ion lies on an inversion center and is coordinated in an slightly distorted octa-hedral environment by two N,O-chelating 3-amino-pyrazine-2-carboxyl-ate (APZC) ligands in the equatorial plane and two trans-axial aqua ligands. In the crystal, O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds involving the solvent water mol-ecules, aqua and APZC ligands form layers parallel to (010). These layers are linked further via O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds involving the axial aqua ligands, amino groups and the carboxyl-ate groups of the APZC ligands, forming a three-dimensional network.
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