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), 2832-2838. (doi:10.1016/j.jorganchem.2007.02.038).
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Description/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’ β → greek small letter alpha interactions, with a fourth β → β 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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0022-328X (print) |
| Related URLs: | |
| Keywords: | non-metal cations, x-ray diffraction, structures,h-bond interactions, pentaborate, supramolecular |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 54242 |
| Date Deposited: | 31 Jul 2008 |
| Last Modified: | 01 Jun 2011 12:01 |
| Contributors: | Beckett, M.A.C.C. (Author) Horton, P.N. (Author) Hursthouse, M.B. (Author) Varma, K.S. (Author) |
| Date: | 2007 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/54242 |
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