Bis(tetraphenylarsonium) hexafluoridotechnetate(IV) dihydrate: preparation, structure and spectroscopic analysis

Balasekaran, Samundeeswari Mariappan; Poineau, Frederic

doi:10.1107/s2053229619014724

Bis(tetraphenylarsonium) hexafluoridotechnetate(IV) dihydrate: preparation, structure and spectroscopic analysis

Journal Article · Thu Nov 14 04:00:00 EST 2019 · Acta Crystallographica. Section C, Structural Chemistry (Online)

DOI:https://doi.org/10.1107/s2053229619014724· OSTI ID:1801048

Balasekaran, Samundeeswari Mariappan ^[1]; Poineau, Frederic

OSTI

Reports of quadrivalent transition-metal fluoride salts containing bulky organic cations are limited. In this context, we prepared the bis(tetraphenylarsonium) hexafluoridotechnetate(IV) dihydrate salt, (C₂₄H₂₀As)₂[TcF₆]·2H₂O, by a cation metathesis reaction of (NH₄)₂[TcF₆] in water. This is the first report of an arsonium salt of the hexafluoridotechnetate(IV) dianion. (AsPh₄)₂[TcF₆]·2H₂O crystallizes in the triclinic space groupP\overline{1}. The [TcF₆]^2-anion adopts a slightly distorted octahedral geometry with an average Tc—F bond length of 1.933 Å. The cyclic voltammogram of (AsPh₄)₂[TcF₆]·2H₂O in CH₃CN shows a one-electron reversible oxidation wave at 1.496 V.

Research Organization:: Univ. of California, Oakland, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

DOE Contract Number:: NA0000979; NA0003180; AC02-06CH11357

OSTI ID:: 1801048

Journal Information:: Acta Crystallographica. Section C, Structural Chemistry (Online), Journal Name: Acta Crystallographica. Section C, Structural Chemistry (Online) Journal Issue: 12 Vol. 75; ISSN ACSCGG; ISSN 2053-2296

Publisher:: International Union of Crystallography

Country of Publication:: United States

Language:: English

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