Crystal structures of potassium tri­fluorido­(4-meth­oxy­phen­yl)borate and potassium tri­fluorido(4-fluoro­phen­yl)borate

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Abstract

The title compounds, K(+)·C7H7BF3O(-), (I), and K(+)·C6H4BF4 (-), (II), are mol-ecular salts containing para-substituted phenyl-tri-fluorido-borate anions. In each compound, the B atom adopts a distorted tetra-hedral BCF3 geometry. Despite their different compositions and space groups, the irregular KF8 coordination polyhedra of the potassium cations in the structures are almost identical. These polyhedra share faces and edges, generating infinite (010) layers in (I) and infinite (001) layers in (II). In (I), adjacent layers are stacked in an AAA… fashion, whereas in (II), they are stacked in an ABAB… sequence.

Original languageEnglish
Pages (from-to)68-71
Number of pages4
JournalActa Crystallographica Section E: Structure Reports Online
Volume70
Issue number8
Early online date19 Jul 2014
DOIs
Publication statusPublished - 1 Aug 2014

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Borates
borates
Anions
Potassium
Cations
potassium
Negative ions
Salts
Crystal structure
Positive ions
polyhedrons
Atoms
crystal structure
Geometry
Chemical analysis
anions
salts
cations
geometry
atoms

Keywords

  • Crystal structure
  • Boron
  • Lewis acid
  • Layered structure

Cite this

@article{2abee5e5c93c490193d0828c89c93480,
title = "Crystal structures of potassium tri­fluorido­(4-meth­oxy­phen­yl)borate and potassium tri­fluorido(4-fluoro­phen­yl)borate",
abstract = "The title compounds, K(+)·C7H7BF3O(-), (I), and K(+)·C6H4BF4 (-), (II), are mol-ecular salts containing para-substituted phenyl-tri-fluorido-borate anions. In each compound, the B atom adopts a distorted tetra-hedral BCF3 geometry. Despite their different compositions and space groups, the irregular KF8 coordination polyhedra of the potassium cations in the structures are almost identical. These polyhedra share faces and edges, generating infinite (010) layers in (I) and infinite (001) layers in (II). In (I), adjacent layers are stacked in an AAA… fashion, whereas in (II), they are stacked in an ABAB… sequence.",
keywords = "Crystal structure, Boron, Lewis acid, Layered structure",
author = "Harrison, {William T. A.} and Wardell, {James L.}",
note = "Acknowledgements We thank the National Crystallography Service (University of Southampton) for the data collections.",
year = "2014",
month = "8",
day = "1",
doi = "10.1107/S1600536814009684",
language = "English",
volume = "70",
pages = "68--71",
journal = "Acta Crystallographica Section E: Structure Reports Online",
issn = "1600-5368",
publisher = "International Union of Crystallography",
number = "8",

}

TY - JOUR

T1 - Crystal structures of potassium tri­fluorido­(4-meth­oxy­phen­yl)borate and potassium tri­fluorido(4-fluoro­phen­yl)borate

AU - Harrison, William T. A.

AU - Wardell, James L.

N1 - Acknowledgements We thank the National Crystallography Service (University of Southampton) for the data collections.

PY - 2014/8/1

Y1 - 2014/8/1

N2 - The title compounds, K(+)·C7H7BF3O(-), (I), and K(+)·C6H4BF4 (-), (II), are mol-ecular salts containing para-substituted phenyl-tri-fluorido-borate anions. In each compound, the B atom adopts a distorted tetra-hedral BCF3 geometry. Despite their different compositions and space groups, the irregular KF8 coordination polyhedra of the potassium cations in the structures are almost identical. These polyhedra share faces and edges, generating infinite (010) layers in (I) and infinite (001) layers in (II). In (I), adjacent layers are stacked in an AAA… fashion, whereas in (II), they are stacked in an ABAB… sequence.

AB - The title compounds, K(+)·C7H7BF3O(-), (I), and K(+)·C6H4BF4 (-), (II), are mol-ecular salts containing para-substituted phenyl-tri-fluorido-borate anions. In each compound, the B atom adopts a distorted tetra-hedral BCF3 geometry. Despite their different compositions and space groups, the irregular KF8 coordination polyhedra of the potassium cations in the structures are almost identical. These polyhedra share faces and edges, generating infinite (010) layers in (I) and infinite (001) layers in (II). In (I), adjacent layers are stacked in an AAA… fashion, whereas in (II), they are stacked in an ABAB… sequence.

KW - Crystal structure

KW - Boron

KW - Lewis acid

KW - Layered structure

U2 - 10.1107/S1600536814009684

DO - 10.1107/S1600536814009684

M3 - Article

C2 - 25249857

VL - 70

SP - 68

EP - 71

JO - Acta Crystallographica Section E: Structure Reports Online

JF - Acta Crystallographica Section E: Structure Reports Online

SN - 1600-5368

IS - 8

ER -