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Ammonium iron(III) phosphate(V) fluoride, (NH(4))(0.5)[(NH(4))(0.375)K(0.125)]FePO(4)F, with ammonium partially substituted by potassium.

Wang L, Zhou Y, Huang YX, Mi JX - Acta Crystallogr Sect E Struct Rep Online (2008)

Bottom Line: The title compound, ammonium potassium iron(III) phosphate fluoride, (NH(4))(0.875)K(0.125)FePO(4)F, is built from zigzag chains (∞) (1){[FeO(4)F(2)](7-)}, with Fe(3+) in a distorted octahedral coordination, extending along both the [011] and [01] directions.These chains are made up of alternating trans-[FeO(4)F(2)] and cis-[FeO(4)F(2)] octa-hedra via shared F-atom corners, and are linked by PO(4) tetra-hedra, resulting in an open-framework structure with channels along the [010] and [100] directions.The ammonium in the [010] channels is fixed to the framework via eight hydrogen bonds (six N-H⋯O and two N-H⋯F).

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People's Republic of China.

ABSTRACT
The title compound, ammonium potassium iron(III) phosphate fluoride, (NH(4))(0.875)K(0.125)FePO(4)F, is built from zigzag chains (∞) (1){[FeO(4)F(2)](7-)}, with Fe(3+) in a distorted octahedral coordination, extending along both the [011] and [01] directions. These chains are made up of alternating trans-[FeO(4)F(2)] and cis-[FeO(4)F(2)] octa-hedra via shared F-atom corners, and are linked by PO(4) tetra-hedra, resulting in an open-framework structure with channels along the [010] and [100] directions. There are two crystallographically independent ammonium sites: one in the [010] channels and the other, partially substituted by K(+) ions, in the [100] channels. The ammonium in the [010] channels is fixed to the framework via eight hydrogen bonds (six N-H⋯O and two N-H⋯F).

No MeSH data available.


Unit cell of (NH4)((NH4)0.75K0.25) [Fe2(PO4)2F2] in a view along b. Trans-[FeO4F2], in blue octahedra; cis-[FeO4F2], in pink octahedra; PO4, in red tetrahedra; black spheres: disordered K/NH4; green spheres: NH4.
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Fap1: Unit cell of (NH4)((NH4)0.75K0.25) [Fe2(PO4)2F2] in a view along b. Trans-[FeO4F2], in blue octahedra; cis-[FeO4F2], in pink octahedra; PO4, in red tetrahedra; black spheres: disordered K/NH4; green spheres: NH4.


Ammonium iron(III) phosphate(V) fluoride, (NH(4))(0.5)[(NH(4))(0.375)K(0.125)]FePO(4)F, with ammonium partially substituted by potassium.

Wang L, Zhou Y, Huang YX, Mi JX - Acta Crystallogr Sect E Struct Rep Online (2008)

Unit cell of (NH4)((NH4)0.75K0.25) [Fe2(PO4)2F2] in a view along b. Trans-[FeO4F2], in blue octahedra; cis-[FeO4F2], in pink octahedra; PO4, in red tetrahedra; black spheres: disordered K/NH4; green spheres: NH4.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2967845&req=5

Fap1: Unit cell of (NH4)((NH4)0.75K0.25) [Fe2(PO4)2F2] in a view along b. Trans-[FeO4F2], in blue octahedra; cis-[FeO4F2], in pink octahedra; PO4, in red tetrahedra; black spheres: disordered K/NH4; green spheres: NH4.
Bottom Line: The title compound, ammonium potassium iron(III) phosphate fluoride, (NH(4))(0.875)K(0.125)FePO(4)F, is built from zigzag chains (∞) (1){[FeO(4)F(2)](7-)}, with Fe(3+) in a distorted octahedral coordination, extending along both the [011] and [01] directions.These chains are made up of alternating trans-[FeO(4)F(2)] and cis-[FeO(4)F(2)] octa-hedra via shared F-atom corners, and are linked by PO(4) tetra-hedra, resulting in an open-framework structure with channels along the [010] and [100] directions.The ammonium in the [010] channels is fixed to the framework via eight hydrogen bonds (six N-H⋯O and two N-H⋯F).

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People's Republic of China.

ABSTRACT
The title compound, ammonium potassium iron(III) phosphate fluoride, (NH(4))(0.875)K(0.125)FePO(4)F, is built from zigzag chains (∞) (1){[FeO(4)F(2)](7-)}, with Fe(3+) in a distorted octahedral coordination, extending along both the [011] and [01] directions. These chains are made up of alternating trans-[FeO(4)F(2)] and cis-[FeO(4)F(2)] octa-hedra via shared F-atom corners, and are linked by PO(4) tetra-hedra, resulting in an open-framework structure with channels along the [010] and [100] directions. There are two crystallographically independent ammonium sites: one in the [010] channels and the other, partially substituted by K(+) ions, in the [100] channels. The ammonium in the [010] channels is fixed to the framework via eight hydrogen bonds (six N-H⋯O and two N-H⋯F).

No MeSH data available.