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Supramolecular structures containing 'isolated' pentaborate anions and non-metal cations: Crystal structures of [Me3NCH2CH2OH][B5O6(OH)(4)] and [4-MepyH, 4-Mepy][B5O6(OH)(4)]

Beckett, M.A.C.C., Horton, P.N., Hursthouse, M.B. and Varma, K.S. (2007) Supramolecular structures containing 'isolated' pentaborate anions and non-metal cations: Crystal structures of [Me3NCH2CH2OH][B5O6(OH)(4)] and [4-MepyH, 4-Mepy][B5O6(OH)(4)] Journal of Organometallic Chemistry, 692, (13), pp. 2832-2838. (doi:10.1016/j.jorganchem.2007.02.038).

Record type: Article

Abstract

The solid-state structures of two non-metal pentaborates [Me3NCH2CH2OH][B5O6(OH)4] (1) and [4-MepyH, 4-Mepy][B5O6(OH)4] (2) have been determined by single-crystal X-ray diffraction methods. Structures 1 and 2 both contain supramolecular pentaborate frameworks held together by extensive H-bond interactions. The framework of 1 exists essentially as planes of pentaborate anions linked via three pairwise ‘planar’ ? ? greek small letter alpha interactions, with a fourth ? ? ? interaction crosslinking the planes. The framework of 2 is very similar except that one of the three pairwise linkages within the plane is replaced by pairwise ‘step-like’ bifurcated H-bonds to both greek small letter alpha sites of a neighboring anion. The cations in 1 and the cations and neutral 4-Mepy ligands in 2 are present in the framework cavities and channels, with additional H-bond interactions existing between cations and anions.

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More information

Published date: 2007
Keywords: non-metal cations, x-ray diffraction, structures, h-bond interactions, pentaborate, supramolecular

Identifiers

Local EPrints ID: 54242
URI: http://eprints.soton.ac.uk/id/eprint/54242
ISSN: 0022-328X
PURE UUID: 7e7d8fa9-bc6e-4724-9b5c-575de47ede5e
ORCID for P.N. Horton: ORCID iD orcid.org/0000-0001-8886-2016

Catalogue record

Date deposited: 31 Jul 2008
Last modified: 17 Jul 2017 14:36

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Contributors

Author: M.A.C.C. Beckett
Author: P.N. Horton ORCID iD
Author: M.B. Hursthouse
Author: K.S. Varma

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