Abstract
The title compound, {(C2H10N2)1.5[Y(C4O4)3(H2O)4]}n {systematic name: catena-poly[sesqui(ethylenediammonium) [[tetraaquabis(squarato-κO)yttrium(III)]-μ-squarato-κ2 O:O′]]}, was synthesized by slow evaporation of an acid solution. The asymetric unit contains one yttrium cation in an antiprismatic environnement, three squarate groups, one and a half protonated ethylenediamine molecules and four water molecules. YO8 polyhedra are connected through bis(monodentate) squarates, leading to infinite zigzag chains, in between which are located ammonium groups. A framework of hydrogen bonds between protonated amine N atoms, water molecules and squarate anions ensures the cohesion of the structure.
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