biostudies-literatureUnknown5(33)Thomas RCrystallized powder of dihydroxide zirconium oxalate Zr(OH)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>) (<b>ZrOx</b>) was obtained by precipitation and the structure determined from powder X-ray data. The three-dimensional (3D) framework observed in (<b>ZrOx</b>) results from the interconnection of zirconium hydroxide chains <sup>1</sup> <sub>∞</sub>[Zr(OH)<sub>2</sub>]<sup>2+</sup> and zirconium oxalate chains <sup>1</sup> <sub>∞</sub>[{Zr(C<sub>2</sub>O<sub>4</sub>)}<sup>2+</sup>]. Single crystals of (H<sub>11</sub>O<sub>5</sub>)<sub>2</sub>[Zr<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>5</sub>(H<sub>2</sub>O)<sub>4</sub>] (<b>H2Zr2O5</b>) were obtained by evaporation. The structure contains dimeric anions [Zr<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>5</sub>(H<sub>2</sub>O)<sub>4</sub>]<ACS omega21260-21270https://www.ebi.ac.uk/biostudies/studies/S-EPMC7450612biostudies-literatureZirconium Oxalates: Zr(OH)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>), (H<sub>11</sub>O<sub>5</sub>)<sub>2</sub>[Zr<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>5</sub>(H<sub>2</sub>O)<sub>4</sub>], and MM'[Zr(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>]·<i>x</i>H<sub>2</sub>O with M and M' = Ammonium, Alkali Metal, and Hydroxonium Ion H<sub>2<i>n</i>+1</sub>O <sub><i>n</i></sub> <sup>+</sup> (<i>n</i> = 2, 3, 4).PMC7450612Devaux PThomas RRivenet MHenry NAbraham FfalseZirconium Oxalates: Zr(OH)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>), (H<sub>11</sub>O<sub>5</sub>)<sub>2</sub>[Zr<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>5</sub>(H<sub>2</sub>O)<sub>4</sub>], and MM'[Zr(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>]·<i>x</i>H<sub>2</sub>O with M and M' = Ammonium, Alkali Metal, and Hydroxonium Ion H<sub>2<i>n</i>+1</sub>O <sub><i>n</i></sub> <sup>+</sup> (<i>n</i> = 2, 3, 4).Crystallized powder of dihydroxide zirconium oxalate Zr(OH)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>) (<b>ZrOx</b>) was obtained by precipitation and the structure determined from powder X-ray data. The three-dimensional (3D) framework observed in (<b>ZrOx</b>) results from the interconnection of zirconium hydroxide chains <sup>1</sup> <sub>∞</sub>[Zr(OH)<sub>2</sub>]<sup>2+</sup> and zirconium oxalate chains <sup>1</sup> <sub>∞</sub>[{Zr(C<sub>2</sub>O<sub>4</sub>)}<sup>2+</sup>]. Single crystals of (H<sub>11</sub>O<sub>5</sub>)<sub>2</sub>[Zr<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>5</sub>(H<sub>2</sub>O)<sub>4</sub>] (<b>H2Zr2O5</b>) were obtained by evaporation. The structure contains dimeric anions [Zr<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>5</sub>(H<sub>2</sub>O)<sub>4</sub>]<2020-01-01T00:00:00Z2020 Aug2026-07-15T22:38:55.218Z2026-07-09T10:21:57.957ZS-EPMC74506123287526310.1021/acsomega.0c03224