W5Br12·BiBr3 Cluster Phases with Different Crystal Structures

• Published in: Journal of structural chemistry 2024-11, Vol.65 (11), p.2285-2294
• Main Authors: Mikhaylov, M. A., Sukhikh, T. S., Guselnikova, T. Ya, Tsygankova, A. R., Kleiman, E. E., Sokolov, M. N.
• Format: Article
• Language: English
• Subjects: Atomic; Atomic structure; Atomic/Molecular Structure and Spectra; Bismuth; Bromine; Chemical reduction; Chemistry; Chemistry and Materials Science; Clusters; Crystal structure; Inductively coupled plasma; Inorganic Chemistry; Mixtures; Molecular; Optical and Plasma Physics; Phases; Physical Chemistry; Single crystals; Solid State Physics; X ray powder diffraction
• ISSN: 0022-4766; 1573-8779
• DOI: 10.1134/S0022476624110155

A mixture of two structurally different cluster phases I and II with the general chemical formula W 5 Br 12 ·BiBr 3 is obtained as a product of the WBr 6 reduction reaction with elemental bismuth at 280 °C. The elemental composition of the mixture is determined by the energy-dispersive X-ray spectroscopy and inductively coupled plasma atomic emission spectrometry. For the single crystals selected from a mixture of phases I and II their crystal structures are determined, and the powder X-ray diffraction analysis is performed for the polycrystalline mixture. In the crystal structure of I , square-pyramidal cluster fragments are bridged by bromine atoms into infinite chains by the W–Br a–a –W interaction. In the structure of II , BiBr 3 (W–{Br a BiBrBr a }–W) molecules incorporate into the chain instead of the bridging bromine atom.