Abstract
Single crystals of Ta4S1.5Se7.5I8 are obtained by heating Ta, S, Se and I2 at 300 °C in 4.0:1.0:8.0:4.4 molar ratio. The structure was determined by X-ray analysis and consists of molecular clusters [Ta4(μ4-S)(μ2-QaxSeeq)4I8] (Q ≈ Se0.87S0.13). The tantalum atoms form a square with long Ta…Ta distances (3.26–3.32 Å), with four dichalcogenide ligands bridging the Ta–Ta edges and a sulfur atom capping the square. Each Ta atom has two terminal iodine atoms. Raman spectroscopy study shows the presence of the characteristic absorption band at 396 cm−1 which is due to the Ta4–μ4-S vibrations. Cyclic voltammetry shows that Ta4S1.5Se7.5I8 in solid state undergoes quasi-reversible one-electron oxidation which is metal-centered.
References
M. N. Sokolov, A. L. Gushchin, P. A. Abramov, A. V. Virovets, E. V. Peresypkina, S. G. Kozlova, B. A. Kolesov, C. Vicent, and V. P. Fedin (2005). Inorg. Chem.. 44, 8756.
M. N. Sokolov, A. L. Gushchin, A. V. Virovets, E. V. Peresypkina, S. G. Kozlova, and V. P. Fedin (2004). Inorg. Chem.. 43, 7966.
M. N. Sokolov, V. P. Fedin, and A. G. Sykes (2003). Compr. Coord. Chem. II. 4, 768.
V. E. Fedorov, Y. V. Mironov, N. G. Naumov, M. N. Sokolov, and V. P. Fedin (2007). Russ. Chem. Bull.. 76, 529.
S. V. Volkov, Z. A. Fokina, O. G. Yanko, V. I. Pekhnyo, and L. B. Kharkova (2005). Zh. Neorg. Khim.. 50, 1244.
F. Scholz and B. Meyer in A. J. Bard, and I. Rubenstein (eds.), Voltammetry of Solid Microparticles Immobilized on Electrode Surfaces, Electroanalytical Chemistry. A Series of Advances, vol. 20 (Dekker, New York Basel Hohg-Kong, 1998), pp. 1–86.
F. Scholz and B. Meyer (1994). Chem. Soc. Rev.. 23, 341.
N. Zakharchuk, B. Meyer, H. Hennig, F. Scholz, A. Jaworksi, and Z. Stojek (1995). J. Electroanal. Chem.. 398, 23.
Bruker AXS Inc SADABS (Version 2.11) (Bruker Advanced X-ray Solutions, Madison, Wisconsin, USA, 2004).
G. M. Sheldrick SHELX-97 (Universität Göttingen, Germany, 1997).
L. J. Farrugia ORTEP-3 (Department of Chemistry, University of Glasgow, 1997).
A. J. Bard and I. R. Faulkner, Electrochemical Methods, Fundamentals and Applications (Wiley, New York, 2001).
W. Bronger, H.-J. Miessen, R. Neugröshel, D. Schmitz, and M. Spangenberg (1985). Z. Anorg. Allg. Chem.. 525, 41.
Y. V. Mironov, T. E. Albrecht-Schmitt, and J. A. Ibers (1997). Inorg. Chem.. 36, 944.
V. E. Fedorov, Y. V. Mironov, V. P. Fedin, H. Imoto, and T. Saito (1996). Acta Crystallogr. Sect. C. 52, 1065.
Acknowledgements
The authors thank Drs. Alexandr V. Virovets and Eugenia V. Peresypkina for carrying out X-ray diffraction experiment and Technical University of Denmark for an H.C. Ørsted Post-doctoral Fellowship (to ALG).
Author information
Authors and Affiliations
Corresponding author
Additional information
An erratum to this article can be found at http://dx.doi.org/10.1007/s10876-009-0249-2
Rights and permissions
About this article
Cite this article
Gushchin, A.L., Sokolov, M.N., Abramov, P.A. et al. A Novel Tantalum Cluster Chalcohalide Ta4S1.5Se7.5I8 . J Clust Sci 19, 659–666 (2008). https://doi.org/10.1007/s10876-008-0197-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10876-008-0197-2