Volume 2017, Issue 34 p. 3981-3989
Full Paper

Ag[B(SO4)2] – Synthesis, Crystal Structure, and Characterization of the First Precious-Metal Borosulfate

Jörn Bruns

Jörn Bruns

Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria

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Maren Podewitz

Maren Podewitz

Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria

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Michael Schauperl

Michael Schauperl

Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria

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Klaus R. Liedl

Klaus R. Liedl

Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria

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Oliver Janka

Oliver Janka

Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Correnstrasse 30, 48149 Münster, Germany

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Rainer Pöttgen

Rainer Pöttgen

Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Correnstrasse 30, 48149 Münster, Germany

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Hubert Huppertz

Corresponding Author

Hubert Huppertz

Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria

Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria

E-mail: [email protected]

https://www.uibk.ac.at/aatc/mitarbeiter/hub/

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First published: 07 June 2017
Citations: 21

Graphical Abstract

The first precious-metal borosulfate is obtained under harsh conditions. The reaction of Ag(NO3) with H3BO3 in oleum leads to Ag[B(SO4)2]. Single-crystal X-ray diffraction reveals tetragonal packing of AgI cations and infinite chains of [B(SO4)2] anions. XRD, IR and Raman spectroscopic, and magnetochemical measurements were performed and further corroborated by means of quantum-chemical studies.

Abstract

The reaction of Ag(NO3) with H3BO3 in oleum (20 % SO3) yielded single crystals of Ag[B(SO4)2] [tetragonal, P4/ncc, Z = 4, a = 8.6679(5) Å, c = 7.2897(5) Å, V = 547.69(7) Å3]. In Ag[B(SO4)2], infinite anionic chains, according to the Niggli formula 1[B(SO4)4/2], are found in tetragonal-rod packing with charge compensation by AgI cations. The chains are built by central boron atoms coordinated through oxygen atoms to four bidentate bridging SO4 tetrahedra. Terminal oxygen atoms of the SO4 tetrahedra coordinate to the silver cations in the form of slightly distorted square prisms. Magnetochemical investigations reveal the expected closed-shell behavior of d10 cations. DFT investigations of the solid-state structure corroborate the experimental findings and permit the assignment of vibrational spectroscopic data.