Trideca­aqua­dinitratohexasodium(I) bis­[(trans‐cyclo­hexane‐1,2‐diyldi­nitrilo­tetraacetato)­nickelate(II)]

TLDR: In this paper, the edta-like tetraanionic unit uses two N and four O atoms to chelate to the Ni atom so that the [Ni(C14H18N2O8)]2− portion of the structure has the Ni atoms in a cis-n2O4Ni octahedral geometry.

Abstract: In the title compound, [Na6(NO3)2(H2O)13][Ni(C14H18N2O8)]2, the edta-like tetraanionic unit uses two N and four O atoms to chelate to the Ni atom so that the [Ni(C14H18N2O8)]2− portion of the structure has the Ni atom in a cis–N2O4Ni octahedral geometry. The [Na6(NO3)2H2O)13]4+ portion exists as a chain consisting of edge-sharing NaO6 octahedra; there are four independent Na atoms in the asymmetric unit. The vertices are derived from the O atoms of water mol­ecules, the O atom of the nitrate group as well as the O atoms of the [Ni(C14H18N2O8)]2− unit. The layer structure is consolidated by hydrogen bonds into a three-dimensional network. Two of the Na atoms and three of the water O atoms lie on special positions of site symmetry 2.