From Cs2Mo6Cl14 to Cs2Mo6Cl14·H2O and Vice Versa: Crystal Chemistry Investigations - Université de Rennes Access content directly
Journal Articles Journal of Cluster Science Year : 2017

From Cs2Mo6Cl14 to Cs2Mo6Cl14·H2O and Vice Versa: Crystal Chemistry Investigations

Serge Paofai
T. Roisnel
V. Nassif
Y. Wada

Abstract

We report here the synthesis, the crystal structure and the luminescent properties of the new cluster compounds Cs2Mo6Cl14.H2O and Cs2Mo6Br14.H2O. Single-crystal X-ray diffraction performed on Cs2Mo6Cl14.H2O indicates that the compound crystallizes in the monoclinic space group C2/c with refined cell parameters a = 19.578 Å, b = 15.151 Å, c = 9.347 Å, and  = 115.64°. The structure can be described from discrete [Mo6Cl i 8Cl a 6] 2-anionic cluster units arranged in a "A-A'-A-A'" pseudo prismatic stacking parallel to (b,c) plane with both Cs + cations and water molecules located between the layers. The centric character of the trigonal structure of Cs2Mo6Cl14 was also studied by combination of single-crystal X-ray diffraction and both X-ray and neutron powder diffraction. The results suggest an important influence of the sample preparation on the symmetry of the crystal structure. The crystal structure relationship between the [Mo6Cl i 8Cl a 6] 2-anionic cluster unit arrangements in Cs2Mo6Cl14 and Cs2Mo6Cl14.H2O is discussed. Finally, the characterization of the luminescent properties of Cs2Mo6X14 and Cs2Mo6X14.H2O (X = Cl, Br) indicates that emission profile is comparable regardless existence of water molecule in the crystal structure.
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Dates and versions

hal-01515141 , version 1 (27-10-2020)

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N. Saito, P. Lemoine, N. Dumait, M. Amela-Cortes, Serge Paofai, et al.. From Cs2Mo6Cl14 to Cs2Mo6Cl14·H2O and Vice Versa: Crystal Chemistry Investigations. Journal of Cluster Science, 2017, 28 (2), pp.773--798. ⟨10.1007/s10876-016-1133-5⟩. ⟨hal-01515141⟩
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