Two types of rare earth-organic frameworks constructed by racemic tartaric acid
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 (China)
Hydrothermal reactions of rare earth oxides with racemic tartaric acid (H{sub 2}tar) yielded 7 rare earth(III) MOFs with general formulas [R{sub 2}(tar){sub 3}(H{sub 2}O){sub 2}]{sub n} (R=Y (1), Sm (4), Eu (5), Tb (6), Dy (7)) and [R{sub 2}(tar){sub 2}(C{sub 2}O{sub 4})(H{sub 2}O){sub 2}]{sub n}{center_dot}4nH{sub 2}O (R=La (2), Nd (3)). X-ray powder diffraction analysis and single-crystal X-ray diffraction analysis reveal that they present two different structural types. MOFs 1, 4, 5, 6 and 7 are isostructural and crystallize in the orthorhombic non-centrosymmetric space group Iba2, and feature unusual fsc-3,4-Iba2 topology. MOFs 2 and 3 are isostructural and crystallize in monoclinic P2{sub 1}/c space group and display rare fsx-4,5-P2{sub 1}/c topology containing hydrophilic channels bounded by triple helical chains along a axis. MOFs 3, 4, 5, 6 and 7 exhibit intense lanthanide characteristic photoluminescence at room temperature. - Graphical Abstract: [R{sub 2}(tar){sub 2}(C{sub 2}O{sub 4})(H{sub 2}O){sub 2}]{sub n}{center_dot}4nH{sub 2}O (R=La (2), Nd (3)) display rare fsx-4,5-P2{sub 1}/c topology containing hydrophilic channels bounded by triple helical chains along a axis. Highlights: Black-Right-Pointing-Pointer Two types of rare earth MOFs were synthesized by hydrothermal conditions. Black-Right-Pointing-Pointer MOFs feature unusual fsc-3,4-Iba2 and rare fsx-4,5-P2{sub 1}/c topology structures. Black-Right-Pointing-Pointer MOFs exhibit intense lanthanide characteristic photoluminescence.
- OSTI ID:
- 21612880
- Journal Information:
- Journal of Solid State Chemistry, Vol. 185; Other Information: DOI: 10.1016/j.jssc.2011.11.012; PII: S0022-4596(11)00615-3; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHAINS
HYDROTHERMAL SYNTHESIS
MONOCLINIC LATTICES
MONOCRYSTALS
PHOTOLUMINESCENCE
RACEMATES
RARE EARTHS
SPACE GROUPS
TARTARIC ACID
TOPOLOGY
X-RAY DIFFRACTION
CARBOXYLIC ACIDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
ELEMENTS
EMISSION
HYDROXY ACIDS
LUMINESCENCE
MATHEMATICS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHOTON EMISSION
SCATTERING
SYMMETRY GROUPS
SYNTHESIS