Borosulfates Hosting Se4 2+ Ions—Crystal Structures, Chemical Bonding, Optical Spectroscopy, and Magnetism
6 affiliations
- 1Lehrstuhl für Festkörperchemie Universität Augsburg Augsburg Germany
- 2Institut für Chemie Technische Universität Berlin Berlin Germany
- 3Institut für Anorganische und Materialchemie Universität zu Köln Köln Germany
- 4Röntgenographie, Max‐Planck‐Institut für Festkörperforschung Stuttgart Germany
- 5Institut für Anorganische Chemie RWTH Aachen University Aachen Germany
- 6Institut für Anorganische und Analytische Chemie Universität Münster Münster Germany
Abstract
Despite consistent growth in the number of compounds known to host homo‐ and hetero polycations of group 16 elements, only two, Se4[HS2O7]2 and Se4[S4O13], provided an exclusively oxidic coordination environment, the former being the first structural characterization of the Se4 2+ cation in 1968. With the first selenium borosulfates Se4[B(S2O7)2]2(SO3), Se4[B(S2O7)2]2, Se4[B2(SO4)2(S2O7)2]‐I, Se4[B2(SO4)2(S2O7)2]‐II, and Se4[B2(SO4)4] we extended this list by five compounds. Aside from Se4[HS2O7]2, Se4[S4O13] was synthesized but never structurally characterized. In this contribution we also evaluate the crystal structure of the tetrasulfate Se4[S4O13]. All compounds are synthesized under solvothermal conditions. Powder reflectance spectra of the selenium borosulfates are in accordance with the yellow body color of the compounds. Magnetic measurements confirm the diamagnetic character of the Se4 2+ ions, in agreement with the calculations. Temperature‐programmed powder X‐ray diffraction reveals that the borosulfates of the study form sequentially with increasing decomposition temperature, enabling their selective synthesis. Furthermore, we performed infrared spectroscopy, Rietveld refinements and thermal analyses.
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BibTeX
@article{turgunbajew2026borosulfates,
title = {{Borosulfates Hosting Se4 2+ Ions—Crystal Structures, Chemical Bonding, Optical Spectroscopy, and Magnetism}},
author = {Erich Turgunbajew and Marios Symeonidis and Jörn Bruns and Sara N. Özbay and Jan Langwald and Mathias S. Wickleder and Robert E. Dinnebier and Linda S. Reitz and Richard Dronskowski and Lars Schumacher and Rainer Pöttgen and Henning A. Höppe},
journal = {Angewandte Chemie (International Ed. in English)},
year = {2026},
month = sep,
doi = {10.1002/anie.4300417},
url = {https://doi.org/10.1002/anie.4300417},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Borosulfates Hosting Se4 2+ Ions—Crystal Structures, Chemical Bonding, Optical Spectroscopy, and Magnetism
AU - Erich Turgunbajew
AU - Marios Symeonidis
AU - Jörn Bruns
AU - Sara N. Özbay
AU - Jan Langwald
AU - Mathias S. Wickleder
AU - Robert E. Dinnebier
AU - Linda S. Reitz
AU - Richard Dronskowski
AU - Lars Schumacher
AU - Rainer Pöttgen
AU - Henning A. Höppe
PY - 2026
DA - 2026/09/19
JO - Angewandte Chemie (International Ed. in English)
DO - 10.1002/anie.4300417
UR - https://doi.org/10.1002/anie.4300417
AB - Despite consistent growth in the number of compounds known to host homo‐ and hetero polycations of group 16 elements, only two, Se4[HS2O7]2 and Se4[S4O13], provided an exclusively oxidic coordination environment, the former being the first structural characterization of the Se4 2+ cation in 1968. With the first selenium borosulfates Se4[B(S2O7)2]2(SO3), Se4[B(S2O7)2]2, Se4[B2(SO4)2(S2O7)2]‐I, Se4[B2(SO4)2(S2O7)2]‐II, and Se4[B2(SO4)4] we extended this list by five compounds. Aside from Se4[HS2O7]2, Se4[S4O13] was synthesized but never structurally characterized. In this contribution we also evaluate the crystal structure of the tetrasulfate Se4[S4O13]. All compounds are synthesized under solvothermal conditions. Powder reflectance spectra of the selenium borosulfates are in accordance with the yellow body color of the compounds. Magnetic measurements confirm the diamagnetic character of the Se4 2+ ions, in agreement with the calculations. Temperature‐programmed powder X‐ray diffraction reveals that the borosulfates of the study form sequentially with increasing decomposition temperature, enabling their selective synthesis. Furthermore, we performed infrared spectroscopy, Rietveld refinements and thermal analyses.
SN - 1433-7851
SN - 1521-3773
ER -