Crystal structure of a new polyoxometalate (POM) compound with a high level of crystallographic disorder.

Crystal structure of a new polyoxometalate (POM) compound with a high level of crystallographic disorder.

Skorepova, Eliska;Harchani, Ali;Ftini, Mohamed Mongi;Dušek, Michal;Haddad, Amor;
acta crystallographica section c, structural chemistry 2020 Vol. 76 pp. 164-169
381
skorepova2020crystalacta

Abstract

The crystal structure, Hirshfeld surface analysis and spectroscopic analysis of a new polyoxometalate (POM) compound, namely, nonakis(2-methoxyaniline) bis(diphosphopentamolybdate) trihydrate, (CHNO)[PMoO]·3HO, is reported. The title compound was synthesized using the solution method and was structurally characterized by single-crystal X-ray diffraction, which revealed P-1 symmetry. A study of the intermolecular interactions using Hirshfeld surface analysis confirmed that the hydrogen-bonding interactions play the dominant role in the stability of the crystal structure. The refinement was complicated by extensive disorder affecting 11 of the 16 ions and molecules in the asymmetric unit. IR and UV-Vis spectroscopic techniques were used to identify the vibrational modes and to classify this compound as an insulator.

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