Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 24, Issue 39, Pages 9729-9734Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201802455
Keywords
crystal; mercury; phosphite; stable frameworks; zinc
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Funding
- Ministry of Science and Technology of Taiwan [MOST 105-2113-M-019-002-MY2]
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A highly stable framework of organic-inorganic hybrid zinc phosphite (NTOU-4) and its cobalt analogue (NTOU-4a) were synthesized under the hydro(solvo)thermal conditions and structurally characterized by single-crystal X-ray diffraction. Their frameworks consisted of inorganic metallophosphite chains, in which the metal atoms were interlinked through 1H-1,2,4-triazole-3,5-diamine and 1,4-benzenedicarboxylate linkers to form new crystalline materials. It is extremely difficult to achieve the consolidation of three distinct coordinations of metal-carboxylate, metal-triazolate, and metal-phosphite bonds into one crystal, resulting in the synthesis of the first mixed-ligand terephthalate-metallophosphite solids in the absence of organic molecules as templates or space-filling counters in their structures. Interestingly, the zinc compound not only exhibits high thermal stability (up to 400 degrees C in air) and chemical resistance to seawater, aqueous solutions (pH3-11), and organic solvents at boiling conditions, but also shows selective removal, recovery, and turn-on sensing abilities of toxic mercury ions in aqueous solutions. Furthermore, the synthesis, characterization, and the difference of the framework stabilities between isostructural zinc and cobalt compounds are also reported.
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