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Non-hydrothermal synthesis and structure determination of two new β-octamolybdate (VI) stabilized with dialkylammonium counterions

Sarr, Bougar and Diop, Cheikh A.K. and Melin, Frederic and Sidibe, Mamadou and Hellwig, Petra and Michaud, Francois and Maury, Francis and Senocq, François and Mbaye, Abdou and Rousselin, Yoann Non-hydrothermal synthesis and structure determination of two new β-octamolybdate (VI) stabilized with dialkylammonium counterions. (2018) Journal of Molecular Structure, 1170. 44-50. ISSN 0022-2860

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Official URL: http://doi.org/10.1016/j.molstruc.2018.05.055


Two new organiceinorganic materials based on MoePOM, namely (iPr2NH2)2.((CH3)2NH2)2.[Mo8O26] (1) and (Pr2NH2)4$[Mo8O26] (2), have been synthesized by a non-hydrothermal method at room temperature and characterized by single crystal X-ray diffraction, thermal gravimetric analysis (TGA) and vibrational spectroscopy. The compound (1) is a b-[Mo8O26]4- anion which crystallizes as a mixed salt of both dimethylammonium [(CH3)2NH2]þ and diisopropylammonium [iPr2NH2]þ. The interaction between anions and cations leads to an inorganic-organic band structure. Similarly, in compound (2), the interconnection of b-[Mo8O26]4- anions with dipropylammonium [Pr2NH2]þ cations gives an inorganicorganic band structure. In both compounds, the cations interact with two different sites of the cluster: a fundamental site formed by four highly nucleophilic terminal oxo ligands, and a second site which is composed of Ot, m2-O and/or m3-O oxygen groups. A remarkable difference between the two compounds is that in compound (2) interactions between the bands involve only Van der Waals forces, whereas in compound (1) the bands interact also through hydrogen bonds.

Item Type:Article
HAL Id:hal-01829951
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université de Bretagne Occidentale - UBO (FRANCE)
Other partners > Université de Strasbourg - UNISTRA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université Cheikh Anta Diop de Dakar - UCAD (SENEGAL)
Other partners > Université Assane Seck de Ziguinchor - UASZ (SENEGAL)
Laboratory name:
Deposited On:04 Jul 2018 12:18

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