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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

✍ Scribed by S. Mahesh; Mark A. Green; Srinivasan Natarajan

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
485 KB
Volume
165
Category
Article
ISSN
0022-4596

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✦ Synopsis

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 octahedra and PO 4 terahedra linked to form one-and three-dimensional structures. Both the compounds possess in5nite one-dimensional chains of Fe}O/F}Fe formed by the FeO 4 F 2 octahedra. The di-protonated DABCO cations are located in between the chains in I and within the channels in II. Whilst I possess the tancoite structure with a new chain composition, II has a three-dimensional structure similar to the gallophosphate, ULM-1. Crystal data for I:

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