Document Type

Article

Abstract

A new transition metal borate hydrate, Co6B24O39(OH)6(H2O)6·2.21H2O, was synthesized via a mild hydrothermal method using boric acid as the melt. The compound crystallizes in the trigonal space group P 3‾ with lattice parameters a = b = 13.17840(10) Å, c = 12.3287(2) Å, and a unit cell volume of 1854.27(4) Å3 (Z = 2). This borate hydrate crystallizes in a new structure type comprised of layers containing [BO3] trigonal planar units and [BO4] tetrahedra that are linked by CoO6 and Co(OH)2(H2O)4 octahedra via corner-sharing. The crystalline phase was confirmed by powder X-ray diffraction, while single-crystal X-ray diffraction was used to determine the structure. The structure contains eight crystallographically independent boron atoms that connect to each other and form a Fundamental Building Block (FBB) consisting of two triborate rings [B3O7OH] and two [BO3] trigonal planar units connected via corner-sharing. This FBB can be written as 8: ∞2[2(3:Δ + 2T) + 2(1:Δ)]. Optical and magnetic measurements, as well as thermal analyss, were carried out to characterize the new borate.

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© 2025 The Authors. Published by Elsevier Masson SAS. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

APA Citation

Alevtina Maksimova, Belt, P., Whitfield, N., Smith, M. D., Gopabandhu Panigrahi, Morrison, G., & Loye, H.-C. zur. (2025). A new transition metal borate, Co6(B24O39(OH)6(H2O)6·2.21H2O, synthesized via a mild hydrothermal synthesis. Solid State Sciences, 163, 107914.https://doi.org/10.1016/j.solidstatesciences.2025.107914

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