Crystals 2011, 1(2), 22-27; doi:10.3390/cryst1020022
Article

A New Open-framework Iron Borophosphate from Ionic Liquids: KFe[BP2O8(OH)]

Received: 11 April 2011; in revised form: 15 April 2011 / Accepted: 18 April 2011 / Published: 19 April 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A new open-framework iron borophosphate, KFe[BP2O8(OH)], has been obtained by ionothermal synthesis from KH2PO4, FeCl3∙4H2O, H3BO3 and [C4mpyr]Br (1-butyl-1-methylpyrrolidinium bromide). Single-crystal X-ray diffraction analysis shows that KFe[BP2O8(OH)] (monoclinic, P21/c, a = 9.372(2) Å , b = 8.146(2)Å , c = 9.587(2) Å, β = 101.18(3)°, V = 718.0(2)Å3 and Z = 4) has a three-dimensional (3-D) framework structure composed by {Fe(III)O5(OH)} octahedra as well as {BO3(OH)} and {PO4} tetrahedra. As anionic structural sub-unit, KFe[BP2O8(OH)], contains an infinite open-branched {[BP2O8(OH)]4-} chain which is formed by alternating {BO3(OH)} and {PO4} tetrahedra. {Fe(III)O5(OH)} octahedra share common O corners with five phosphate tetrahedra and the OH corner links to the hydrogen borate group to give a 3D framework. The negative charges of the inorganic framework are balanced by K+ ions.
Keywords: iron borophosphate; ionothermal synthesis; crystal structure
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MDPI and ACS Style

Wang, G.; Mudring, A.-V. A New Open-framework Iron Borophosphate from Ionic Liquids: KFe[BP2O8(OH)]. Crystals 2011, 1, 22-27.

AMA Style

Wang G, Mudring A-V. A New Open-framework Iron Borophosphate from Ionic Liquids: KFe[BP2O8(OH)]. Crystals. 2011; 1(2):22-27.

Chicago/Turabian Style

Wang, Guangmei; Mudring, Anja-Verena. 2011. "A New Open-framework Iron Borophosphate from Ionic Liquids: KFe[BP2O8(OH)]." Crystals 1, no. 2: 22-27.

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