Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 20, Pages 10255-10265Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm16213j
Keywords
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Funding
- Slovenian Research Agency [P2-0145, P1-0030]
- Slovene Human Resources Development and Scholarship Fund
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Two novel nanosized hybrid inorganic-organic frameworks, VO(C14H9COO)(2), and VO(C10H7COO)(2) have been solvothermally synthesized and their structures elucidated using a combination of powder XRD and DFT geometry optimization. They contain one-dimensional chains of corner-sharing tetrahedra in the case of VO(C10H7COO)(2), and corner-sharing octahedra for VO(C14H9COO)(2) oriented along orthorhombic/monoclinic c-axis, respectively. While VO(C14H9COO)(2) exhibits bidentate bridging binding of organic moiety to the metal center, VO(C10H7COO)(2) shows a monodentate mode as evidenced from DFT and infrared spectroscopy. Both hybrids exhibit fiber-like morphology, consisting of smaller individual single crystals aligned in parallel to the growth direction along the c-axis. They are thermally stable up to 350 degrees C having even more stable impurities containing vanadium in its highest oxidation state. The magnetic properties have also been investigated and indicate antiferromagnetic ordering along the chains characterized by rather low spin exchange parameters.
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