𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Hydrothermal Syntheses and Crystal Structures of Two New Iron Phosphates [C2N2H10]2+[Fe(HPO4)2(OH)]2−·H2O and KFe3(OH)2(PO4)2·2H2O

✍ Scribed by Zoe A.D. Lethbridge; Philip Lightfoot; Russell E. Morris; David S. Wragg; Paul A. Wright; Åke Kvick; Gavin Vaughan

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
267 KB
Volume
142
Category
Article
ISSN
0022-4596

No coin nor oath required. For personal study only.

✦ Synopsis

Two new iron phosphates have been prepared hydrothermally and characterized by single crystal X-ray diffraction.

The structure is composed of isolated anionic chains of the tancoite type, [Fe(HPO 4 ) 2 OH] n , consisting of vertex-sharing Fe-O octahedra. The chains are isotypic with those in the iron fluorophosphate ULM-14, but in that case the vertex-sharing is via an F ؊ link rather than an OH ؊ link. KFe 3 (OH) 2 (PO 4 ) 2 • 2H 2 O (II) adopts the orthorhombic space group Pmc2

, a ‫؍‬ 6.410(2) A s , b ‫؍‬ 7.429(3) A s , c ‫؍‬ 9.868(4) A s , Z ‫؍‬ 2, R, R w ‫؍‬ 0.053, 0.090. In this case the structure was solved from microcrystal diffraction data at a synchrotron source (crystal size 60؋15؋5 m). The structure is isotypic with the mineral olmsteadite, KFe 2 NbO 2 (PO 4 ) 2 • 2H 2 O, with Fe 3؉ on the Nb 5؉ site and charge-balancing OH ؊ groups replacing O 2؊ . This compound has a three-dimensional framework structure with small channels running parallel to a and c in which the K ؉ ions sit.

📜 SIMILAR VOLUMES

Hydrothermal Syntheses and Structures of
Hydrothermal Syntheses and Structures of Three-Dimensional Oxo-fluorovanadium Phosphates: [H2N(C2H4)2NH2]0.5[(VO)4V(HPO4)2(PO4)2F2(H2O)4] · 2H2O and K2[(VO)3(PO4)2F2(H2O)] · H2O
✍ Grant Bonavia; R.C Haushalter; Jon Zubieta 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 420 KB

2.5 , monoclinic C2/m, a ‫؍‬ 18.425(4) A ˚, c ‫؍‬ 8.954(2) A ˚, ␤ ‫؍‬ 93.69(2) 0 , V ‫؍‬ 1221.1(4) A ˚3, Z ‫؍‬ 4, D calc ‫؍‬ 2.423 g cm ؊3 ; 2 ؒ H 2 O, H 4 F 2 K 2 O 13 P 2 V 3 , triclinic P1, a ‫؍‬ 7.298(1) A ˚, b ‫؍‬ 8.929(2) A ˚, c ‫؍‬ 10.090(2) A ˚, ␣ ‫؍‬ 104.50(2) 0 , ␤ ‫؍‬ 100.39(2) 0 , ␦ ‫؍‬

Synthesis of Open-Framework Iron Phospha
Synthesis of Open-Framework Iron Phosphates, [C6N2H14][FeIII2F2(HPO4)2(H2PO4)2]·2H2O and [C6N2H14]2[FeIII3(OH)F3(PO4)(HPO4)2]2·H2O, with One- and Three-Dimensional Structures
✍ S. Mahesh; Mark A. Green; Srinivasan Natarajan 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 485 KB

The hydrothermal syntheses and structures of two new open-framework iron phosphates, I, [C 6 N 2 H 14 ][Fe III 2 F 2 (HPO 4 ) 2 (H 2 PO 4 ) 2 ].2H 2 O, II, and [C 6 N 2 H 14 ] 2 [Fe III 3 (OH)F 3 (PO 4 ) (HPO 4 ) 2 ] 2 . H 2 O, are presented. The structures of both I and II consist of FeO 4 F 2 octa

Hydrothermal Synthesis and Structural Ch
Hydrothermal Synthesis and Structural Characterization of Two New Three-Dimensional Oxyfluorinated Titanium PhosphatesTi4(HPO4)2(PO4)4F2·C4N2H12·H2O and Ti4(HPO4)2(PO4)4F2·C2N2H10·H2O
✍ Yunlong Fu; Yunling Liu; Zhan Shi; Yongcun Zou; Wenqin Pang 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 416 KB

Two new organo-templated three-dimensional 6uorinated titanium phosphates Ti 4 (HPO 4 ) 2 (PO 4 ) 4 F 2 ' C 4 N 2 H 12 ' H 2 O 1 and Ti 4 (HPO 4 ) 2 (PO 4 ) 4 F 2 ' C 2 N 2 H 10 ' H 2 O 2 have been prepared hydrothermally in the presence of piperazine (C 4 N 2 H 10 ) and ethylenediamine (C 2 N 2 H 8

Leucophosphite K[Fe2(PO4)2(OH)(H2O)]·H2O
Leucophosphite K[Fe2(PO4)2(OH)(H2O)]·H2O: Hydrogen Bonding and Structural Relationships
✍ Stefan Dick; Thomas Zeiske 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 337 KB

Hydrogen atom positions in leucophosphite K[Fe 2 (PO 4 ) 2 (OH)(H 2 O)] • H 2 O were elucidated by Rietveld refinement of a powder neutron scattering diffractogram. Crystal data: a ‫؍‬ 975.6(3), b ‫؍‬ 966.4(3), c ‫؍‬ 976.9(4) pm, ‫؍‬ 102.43(2)°°, R wp ‫؍‬ 0.084. This experiment proved that the Fe-at