A new look at NaBrF4: the most BrF3-rich tetrafluoridobromate(III) by mass

Ivlev, Sergei I.; Ostvald, Roman; Kraus, Florian

doi:10.1007/s00706-016-1799-2

Cited by 12 publications

(9 citation statements)

References 33 publications

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“…[2] To date, it is only characterized by vibrational and NMR spectroscopy. [2,3] Significantly more references regarding the tetrafluoridobromate(III) ([BrF 4 ] -) can be found in the literature with several counterions, including Na + , [4] K + , [5][6][7] Rb + , [8] Cs + , [7,9,10] Ag + , [11] NO + , [10] NO 2 + , [10] [NMe 4 ] + , [12] [NF 4 ] + [13] and Ba 2+ . [11,14] The synthesis is accomplished by exposure of the corresponding fluorides or chlorides to BrF 3 .…”

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Soluble Fluoridobromates as Well‐Behaved Strong Fluorination Reagents

et al. 2020

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We present a facile synthesis of the soluble fluoridobromates [NEt3Me][BrF4] and [NEt3Me][Br2F7] via fluorination of the corresponding bromide salts in acetonitrile, propionitrile or bromine. We structurally characterized the [BrF2]– anion, an intermediate during the synthesis, for the first time. Additionally, the dissolution of noble metals to form the corresponding halometallates as well as the application of [NEt3Me][BrF4] as a fluorination agent for disulfides to form pentafluorosulfanyls was studied.

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confidence: 99%

Soluble Fluoridobromates as Well‐Behaved Strong Fluorination Reagents

et al. 2020

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“…] (at 100 K; this work) 1.8924 (9) 2.7112 (6) Na [BrF 4 ] (at 100 K; Ivlev et al, 2016) 1.899 (1) 2.4674 (4) Rb [BrF 4 ] (at RT; Ivlev et al, 2015) 1.932 (8) 2.851 (7) Cs [BrF 4 ] (at RT; Ivlev et al, 2013) 1.94 (7) Figure 1 The crystal structure of K [BrF 4 ] in a projection along the a axis. Displacement ellipsoids are shown at the 70% probability level.…”

Section: Refinementmentioning

confidence: 77%

Redetermination of the crystal structure of K[BrF₄] from single-crystal X-ray diffraction data

Ivlev

Kraus

2018

IUCr Data

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Single crystals of K [BrF 4 ], potassium tetrafluoridobromate(III), were grown from a solution of KHF 2 in bromine trifluoride. The current report is the first refinement of the crystal structure of K[BrF 4 ] using single-crystal X-ray diffraction data. In comparison with previous refinements from powder data, the fractional coordinates of the F atom were determined with higher precision, and anisotropic displacement parameters were refined for all atoms. The structure contains square-planar [BrF 4 ] À anions. The coordination polyhedron of the potassium cation is a square antiprism. Structure descriptionThe first attempt to elucidate the crystal structure of K[BrF 4 ] was carried out by Siegel using powder X-ray diffraction data (Siegel, 1956). He could index the powder pattern in a tetragonal cell, space group I4/mcm, with a = 6.162 (2), c = 11.081 (2) Å , and the [BrF 4 ]

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“…Therefore, the whole molecule is not planar. The square planar atomic environment around the Br atom is typical for Br in oxidation state +III and can be observed in compounds containing [BrF2] + , [17][18][19] [Br2F5] + , [20,21] [Br3F8] + [20,21] cations, [BrF4] -, [22][23][24][25][26][27] [Br2F7] -, [28] [Br3F10] - [28] anions, as well as in solid BrF3. [29] The F1-Br1-N1 angle in [py•BrF3] is exactly 180° as all three atoms reside on the crystallographic two-fold rotation axis.…”

Section: Crystal Structure Elucidationmentioning

confidence: 99%

“…[29] The F1-Br1-N1 angle in [py•BrF3] is exactly 180° as all three atoms reside on the crystallographic two-fold rotation axis. The F2-Br1-F2#1 angle is 172.9(2)°, the deviation from linearity is caused by the repulsion of the F2 and F2#1 atoms from the F1 atom as well as [25] and KBrF4 1.8924(9) Å. [24] The Ftrans-Br distance is longer and lies between the values observed in the [BrF4]anion and the values of the Br-µ-F distance for bridging fluorine atoms in the [Br3F8] + cation (1.969(7) to 1.995(8) Å).…”

Section: Crystal Structure Elucidationmentioning

confidence: 99%

Synthesis and characterization of the pyridine—bromine trifluoride (1/1) complex, [py∙BrF3]

Ivlev

Buchner

Karttunen

et al. 2018

Journal of Fluorine Chemistry

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This is an electronic reprint of the original article. This reprint may differ from the original in pagination and typographic detail. Powered by TCPDF (www.tcpdf.org)This material is protected by copyright and other intellectual property rights, and duplication or sale of all or part of any of the repository collections is not permitted, except that material may be duplicated by you for your research use or educational purposes in electronic or print form. You must obtain permission for any other use. Electronic or print copies may not be offered, whether for sale or otherwise to anyone who is not an authorised user.Ivlev, Sergei I.; Buchner, Magnus R.; Karttunen, Antti J.; Kraus, Florian Synthesis and characterization of the pyridine-bromine trifluoride (1/1) complex, [py•BrF3]

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A new look at NaBrF4: the most BrF3-rich tetrafluoridobromate(III) by mass

Cited by 12 publications

References 33 publications

Soluble Fluoridobromates as Well‐Behaved Strong Fluorination Reagents

Soluble Fluoridobromates as Well‐Behaved Strong Fluorination Reagents

Redetermination of the crystal structure of K[BrF₄] from single-crystal X-ray diffraction data

Synthesis and characterization of the pyridine—bromine trifluoride (1/1) complex, [py∙BrF3]

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A new look at NaBrF4: the most BrF3-rich tetrafluoridobromate(III) by mass

Cited by 12 publications

References 33 publications

Soluble Fluoridobromates as Well‐Behaved Strong Fluorination Reagents

Soluble Fluoridobromates as Well‐Behaved Strong Fluorination Reagents

Redetermination of the crystal structure of K[BrF4] from single-crystal X-ray diffraction data

Synthesis and characterization of the pyridine—bromine trifluoride (1/1) complex, [py∙BrF3]

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Redetermination of the crystal structure of K[BrF₄] from single-crystal X-ray diffraction data