Crystal structure of octa-kis-(N,N-di-methyl-formamide-κO)europium(III) tetra-cosa-μ2-oxido-dodeca-oxido-μ12-phosphato-dodeca-molybdate(VI)

Yassine Ghandour; Imen Hammami; Shabir Najmudin; Cecilia Bonifácio; Mohamed Salah Belkhiria

doi:10.1107/S2056989016003546

Crystal structure of octa-kis-(N,N-di-methyl-formamide-κO)europium(III) tetra-cosa-μ2-oxido-dodeca-oxido-μ12-phosphato-dodeca-molybdate(VI)

Acta Crystallogr E Crystallogr Commun. 2016 Mar 4;72(Pt 4):448-51. doi: 10.1107/S2056989016003546. eCollection 2016 Apr 1.

Authors

Yassine Ghandour¹, Imen Hammami¹, Shabir Najmudin², Cecilia Bonifácio³, Mohamed Salah Belkhiria¹

Affiliations

¹ Laboratoire de Physico-chimie des Matériaux, Faculté des Sciences de Monastir, Avenue de l'environnement, 5019 Monastir, University of Monastir, Tunisia.
² Faculdade de Medicina, Veterinària, Universidade Tecnica de Lisboa, Avenida da Universidade Tecnica, 1300-477 Lisboa, Portugal.
³ REQUIMTE/CQFB Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.

Abstract

In the title salt, [Eu(C3H7NO)8][PMo12O40], the asymmetric unit comprises one α-Keggin-type [PMo12O40](3-) polyoxidometalate anion and one distorted dodeca-hedral [Eu(C3H7NO)8](3+) complex cation. In the crystal, the isolated polyoxidometalate anions are packed into hexa-gonally arranged rows extending parallel to [001]. The complex cations are situated between the rows and are linked to the neighbouring anions through weak C-H⋯O hydrogen-bonding inter-actions, leading to the formation of a three-dimensional network structure.

Keywords: IR spectroscopy; crystal structure; europium; α-Keggin-type [PMo12O40]3− polyanion.