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Hydrothermal Synthesis, Structure, and Magnetic Properties of a Layered Fe(III) Carboxymethylphosphonate: [Fe(H2O)(O3P–CH2–CO2)] or MIL-49 by Morgane Sanselme; Myriam Riou-Cavellec; Jean-Marc Grenèche; Gérard Férey is a Materials Science article available to read on EtoBox.

What is Hydrothermal Synthesis, Structure, and Magnetic Properties of a Layered Fe(III) Carboxymethylphosphonate: [Fe(H2O)(O3P–CH2–CO2)] or MIL-49 about?

Fe III (H 2 O)(O 3 P-(CH 2 )-CO 2 )] or MIL-49 was hydrothermally synthesized under autogenous pressure at 1701C for 48 h. Its bidimensional structure was solved from single-crystal X-ray diffraction in the monoclinic space group P2 1 /c (No.14). Cell parameters are a = 9.3836(3) A ̊, b = 6.3798(3) A ̊, c = 10.1371(3) A ̊, b = 111.891(2)1, Z = 4, and V = 563.10(4) A ̊3. Reliability factors of the structure refinement are R 1 (F) = 0.0470 and wR 2 (F 2 ) = 0.1297 for 1036 reflections with I42r(I). The structure of MIL-49 is based on inorganic units built up from two edge-sharing [FeO 5 (H 2 O)] octahedra and two carboxymethylphosphonate groups. The connection of these units leads to the formation of hybrid sheets. A dangling oxygen atom from the carboxy function points toward the interlayer space and is responsible for hydrogen bonding with adjacent layers. Magnetic measurements and 57 Fe Mo ̈ssbauer study reveal an antiferromagnetic ordering below T N = 25(1) K which becomes canted below 11(1) K.

Who reads Hydrothermal Synthesis, Structure, and Magnetic Properties of a Layered Fe(III) Carboxymethylphosphonate: [Fe(H2O)(O3P–CH2–CO2)] or MIL-49?

Author

Morgane Sanselme; Myriam Riou-Cavellec; Jean-Marc Grenèche; Gérard Férey

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0022-4596)

Published

2002

Language

EN

Field

Materials Science (Physical Sciences)