Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1

Merca A, Müller A, van Slageren J, Laege M, Krebs B (2007)
Journal of Cluster Science 18(3): 711-719.

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Abstract
A new type of heteropolytungstate is reported that contains in a triangular arrangement one lanthanide f element and two d transition metals in form of heteroatoms. The first example in this series is the monoclinic Na3K5[((VO)(2)Dy(H2O)(4)K-2(H2O)(2)Na(H2O)(2))(alpha-B-AsW9O33)(2)] center dot a23H(2)O (1) which was prepared from an acidified aqueous solution of Na2WO4 center dot 2H(2)O, As2O3 and VOSO4 center dot 5H(2)O to which Dy3+ ions were added. The single crystal X-ray structure analysis shows that the anion 1a consists of two [alpha-B-(AsW9O33)-W-III](9-) trilacunary Keggin type units linked by two VO2+, one Dy3+ as well as two K+ stop and one Na+ ion, resulting in a sandwich-type structure with idealized C-2v symmetry. The complete magnetochemical analysis shows very interesting magnetic properties, which will be considered in the full series together with the properties of the homologous compounds in due course.
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Merca A, Müller A, van Slageren J, Laege M, Krebs B. Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1. Journal of Cluster Science. 2007;18(3):711-719.
Merca, A., Müller, A., van Slageren, J., Laege, M., & Krebs, B. (2007). Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1. Journal of Cluster Science, 18(3), 711-719.
Merca, A., Müller, A., van Slageren, J., Laege, M., and Krebs, B. (2007). Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1. Journal of Cluster Science 18, 711-719.
Merca, A., et al., 2007. Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1. Journal of Cluster Science, 18(3), p 711-719.
A. Merca, et al., “Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1”, Journal of Cluster Science, vol. 18, 2007, pp. 711-719.
Merca, A., Müller, A., van Slageren, J., Laege, M., Krebs, B.: Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1. Journal of Cluster Science. 18, 711-719 (2007).
Merca, Alice, Müller, Achim, van Slageren, Joris, Laege, Mechtild, and Krebs, Bernt. “Systematic study of the interaction between V-IV centres and lanthanide ions M-III in well defined {(V2MIII)-M-IV}{(AsW9O33)-W-III}(2) sandwich type clusters: Part 1”. Journal of Cluster Science 18.3 (2007): 711-719.
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