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Sarr, B., Mbaye, A., Diop, C. A. K., Sidibe, M., Melin, F., Hellwig, P., Maury, F., Charvillat, C., Giorgi, M., Michaud, F. & Dessapt, R. (2021) Two new inorganic-organic hybrid materials based on beta- and gamma- octamolybdate clusters: Synthesis, structure determination and solid-state photochromic properties. Polyhedron, 194 114919. 
Added by: Richard Baschera (2021-03-04 12:49:37)   Last edited by: Richard Baschera (2021-03-04 14:34:45)
Type de référence: Article
DOI: 10.1016/j.poly.2020.114919
Numéro d'identification (ISBN etc.): 0277-5387
Clé BibTeX: Sarr2021
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Catégories: INTERNATIONAL, MIOPS
Mots-clés: crystal structure, Inorganic-organic hybrid, Octamolybdate isomers, photochromism, polyoxometalate
Créateurs: Charvillat, Dessapt, Diop, Giorgi, Hellwig, Maury, Mbaye, Melin, Michaud, Sarr, Sidibe
Collection: Polyhedron
Consultations : 5/111
Indice de consultation : 2%
Indice de popularité : 0.5%
Liens URLs     https://www.scienc ... /S0277538720305763
Résumé     
Two new hybrid inorganic–organic compounds, namely (iPr2NH2)2(NH4)2[Mo8O26] (1) and (C4H7N2)4[Mo8O26(C4H6N2)2]·2H2O (2), have been synthesized from room temperature, and characterized by vibrational spectroscopies, thermal gravimetric analysis (TGA) and single-crystal X-ray diffraction. Compound (1) contains a β-octamolybdate anionic cluster (β-[Mo8O26]4−) stabilized with two ammonium [NH4]+ and two diisopropylammonium [iPr2NH2]+ cations. Compound (2) is built upon a γ-octamolybdate anionic cluster (γ-[Mo8O26]4−) functionalized by two neutral 2-methylimidazole (C4H6N2) molecules, and stabilized by four protonated 2-methylimidazolium [C4H7N2]+ cations. Single-crystal X-ray diffraction analyses reveal that the compounds have 2D and 3D supramolecular structures resulting from electrostatic and H-bonding interactions between inorganic and organic entities. Both compounds exhibit distinct solid-state photochromic properties at room temperature which vary with the nature of both the polyoxometalate clusters and the organoammonium cations.
  
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