title: Bis(ethylenediaminium) bis[oxalohydroxamato(3-)]nickelate(II) dihydrate.
abstract: The title compound, (C2H10N2)2[Ni(C2HN2O4)2].2H2O, has an ionic structure containing a centrosymmetric complex 4- anion, charge-balancing ethylenediaminium dications and solvent water molecules. The oxalohydroxamate unit is triply deprotonated and forms five-membered chelate rings with the central Ni ion; the Ni ion lies on an inversion centre. The two hydroxamate O atoms in the complex anion are linked by short intramolecular hydrogen bonds.
authors.affiliation: National Taras Shevchenko University, Department of Chemistry, Volodymyrska str. 64, 01033 Kiev, Ukraine.
authors.forename: Yurii S
authors.initials: YS
authors.lastname: Moroz
authors.forename: Elźbieta
authors.initials: E
authors.lastname: Gumienna-Kontecka
authors.forename: Igor O
authors.initials: IO
authors.lastname: Fritsky
authors.forename: Nikolay M
authors.initials: NM
authors.lastname: Dudarenko
authors.forename: Jolanta
authors.initials: J
authors.lastname: Swiatek-Kozłowska
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; C519931:bis(ethylenediaminium) bis(oxalohydroxamato(3-))nickelate(II)