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. 2019 Jun 21;75(Pt 7):1001-1004.
doi: 10.1107/S2056989019008454. eCollection 2019 Jul 1.

Synthesis and crystal structure of a new hybrid organic-inorganic material containing neutral mol-ecules, cations and hepta-molybdate anions

Bougar Sarr  1 , Abdou Mbaye  2 , Wally Diallo  1 , Cheikh Abdoul Khadir Diop  1 , Mamadou Sidibe  1 , Francois Michaud  3
Affiliations

Synthesis and crystal structure of a new hybrid organic-inorganic material containing neutral mol-ecules, cations and hepta-molybdate anions

Bougar Sarr et al. Acta Crystallogr E Crystallogr Commun. .

Abstract

The title compound, hexa-kis-(2-methyl-1H-imidazol-3-ium) hepta-molybdate 2-methyl-1H-imidazole disolvate dihydrate, (C4H7N2)6[Mo7O24]·2C4H6N2·2H2O, was prepared from 2-methyl-imidazole and ammonium hepta-molybdate tetra-hydrate in acid solution. The [Mo7O24]6- hepta-molybdate cluster anion is accompanied by six protonated (C4H7N2)+ 2-methyl-imidazolium cations, two neutral C4H6N2 2-methyl-imidazole mol-ecules and two water mol-ecules of crystallization. The cluster consists of seven distorted MoO6 octa-hedra sharing edges or vertices. In the crystal, the components are linked by N-H⋯N, N-H⋯O, O-H⋯O, N-H⋯(O,O) and O-H⋯(O,O) hydrogen bonds, generating a three-dimensional network. Weak C-H⋯O inter-actions consolidate the packing.

Keywords: IR spectroscopic study; crystal structure; hydrogen bonding; polyoxomolybdates.

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Figures

Figure 1
Figure 1
Mol­ecular structure of the [Mo7O24]6− hepta­molybdate cluster anion in (I).
Figure 2
Figure 2
The asymmetric unit of (I) with displacement ellipsoids drawn at the 50% probability level.
Figure 3
Figure 3
Detail of the structure of (I) showing the inter­connections of the [Mo7O24]6− anion with its neighbours.
See this image and copyright information in PMC

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