Toggle Main Menu Toggle Search

Open Access padlockePrints

Organic crystal engineering with 1,4-piperazine-2,5-diones. 7. Crystal packing of piperazinediones derived from 2-amino-7-nitro-4-methoxyindan-2-carboxylic acid

Lookup NU author(s): Gary Nichol, Emeritus Professor Bill Clegg, Dr Ross Harrington

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

1,4-Piperazine-2,5-diones derived from 2-amino-7-nitro-4-methoxyindan-2-carboxylic acid were prepared in meso, racemic, and enantiomerically pure forms, crystallized from DMSO or DMF, and the supramolecular organization in the crystals determined by X-ray crystallography. These molecules were designed to bear two strongly dipolar p-nitroanisole groups, aligned in the enantiomeric stereoisomers and opposed in the meso stereoisomer. Consistent with piperazinediones of similar size and shape bearing nonpolar or weakly dipolar arene groups, these compounds engage in R-2(2)(8) hydrogen bonding, most often forming one-dimensional tapes. However, the preference for arene perpendicular edge-to-center interactions seen in the former is replaced by a preference for parallel edge-to-center arene interactions. While the dipoles of parallel edge-to-center associated arenes are often opposed, this is not a requirement in the solid state.


Publication metadata

Author(s): Ntirampebura D, Jagadish B, Nichol GS, Carducci MD, Dawson A, Rajapakshe A, Oliver AG, Clegg W, Harrington RW, Layne L, Margolis JI, Mash EA

Publication type: Article

Publication status: Published

Journal: Crystal Growth & Design

Year: 2008

Volume: 8

Issue: 9

Pages: 3257-3270

ISSN (print): 1528-7483

ISSN (electronic): 1528-7505

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/cg701240m

DOI: 10.1021/cg701240m


Altmetrics

Altmetrics provided by Altmetric


Actions

Find at Newcastle University icon    Link to this publication


Share