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Crystal structure of dicaesium strontium hexa-cyanidoferrate(II), Cs2Sr[Fe(CN)6], from laboratory X-ray powder data.

ABSTRACT: Ferrocyanides with general formula A I xB II y [Fe(CN)6], where A and B are cations, are thought to accept many substitutions on the A and B positions. In this communication, the synthesis and crystal structure of Cs2Sr[Fe(CN)6] are reported. The latter was obtained from K2Ba[Fe(CN)6] particles, put in contact with caesium and strontium ions. Hence, a simultaneous ion-exchange mechanism (Cs for K, Sr for Ba) occurs to yield Cs2Sr[Fe(CN)6]. The synthesis protocol shows that K2BaFe(CN)6 particles can be used for the simultaneous trapping of radioactive caesium and strontium nuclides in water streams. Cs2Sr[Fe(CN)6] adopts the cryolite structure type and is isotypic with the known compound Cs2Na[Mn(CN)6] [dicaesium sodium hexa-cyanidomanganate(III)]. The octa-hedrally coordinated Sr and Fe sites both are located on inversion centres, and the eightfold-coordinated Cs site on a general position.

SUBMITTER: Massoni N 

PROVIDER: S-EPMC7274004 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Crystal structure of dicaesium strontium hexa-cyanidoferrate(II), Cs<sub>2</sub>Sr[Fe(CN)<sub>6</sub>], from laboratory X-ray powder data.

Massoni Nicolas N   Moloney Mícheál P MP   Grandjean Agnès A   Misture Scott T ST   Zur Loye Hans-Conrad HC  

Acta crystallographica. Section E, Crystallographic communications 20200522 Pt 6

Ferrocyanides with general formula <i>A</i> <sup>I</sup> <i><sub>x</sub>B</i> <sup>II</sup> <sub><i>y</i></sub> [Fe(CN)<sub>6</sub>], where <i>A</i> and <i>B</i> are cations, are thought to accept many substitutions on the <i>A</i> and <i>B</i> positions. In this communication, the synthesis and crystal structure of Cs<sub>2</sub>Sr[Fe(CN)<sub>6</sub>] are reported. The latter was obtained from K<sub>2</sub>Ba[Fe(CN)<sub>6</sub>] particles, put in contact with caesium and strontium ions. Hence,  ...[more]

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