Abstract
[FeIII(H2O)(O3P– (CH2)–CO2)] or MIL-49 was hydrothermally synthesized under autogenous pressure at 170°C for 48 h. Its bidimensional structure was solved from single-crystal X-ray diffraction in the monoclinic space group P21/c (No.14). Cell parameters are a =9.3836(3) Å, b=6.3798(3) Å, c=10.1371(3) Å, β=111.891(2)°, Z=4, and V=563.10(4) Å3. Reliability factors of the structure refinement are R1(F)=0.0470 and wR2(F2)=0.1297 for 1036 reflections with I>2σ(I). The structure of MIL-49 is based on inorganic units built up from two edge-sharing [FeO5(H2O)] 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 57Fe Mössbauer study reveal an antiferromagnetic ordering below TN=25(1) K which becomes canted below 11(1) K.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
