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https://doi.org/10.1039/b800797g
Title: | Co-crystallisation of 2,2′-dithiodibenzoic acid with the isomeric n-pyridinealdazines, n = 2, 3 and 4: Supramolecular polymers and the influence of steric factors upon aggregation patterns |
Authors: | Broker, G.A. Bettens, R.P.A. Tiekink, E.R.T. |
Issue Date: | 2008 |
Source: | Broker, G.A., Bettens, R.P.A., Tiekink, E.R.T. (2008). Co-crystallisation of 2,2′-dithiodibenzoic acid with the isomeric n-pyridinealdazines, n = 2, 3 and 4: Supramolecular polymers and the influence of steric factors upon aggregation patterns. CrystEngComm 10 (7) : 879-887. ScholarBank@NUS Repository. https://doi.org/10.1039/b800797g |
Abstract: | The structure of the 1:1 co-crystal formed between the dicarboxylic acid, 2,2′-dithiodibenzoic acid, and each of the isomeric 3- and 4-pyridinealdazines features a supramolecular zig-zag chain constructed about the O-Hacid⋯Npyridine synthon. By contrast, using the same experimental conditions, only a 2:3 co-crystal could be formed when the isomeric 2-pyridinealdazine was used. Here, a pentamer is found, stabilised by the O-Hacid⋯Npyridine synthon and these associate to form a supramolecular chain via C-H⋯π contacts. Theory shows no significant differences in the basicity of the pyridine-nitrogen atoms leading to the conclusion that it is the steric congestion related to the relative disposition of the 2-pyridine nitrogen that is responsible for the observed behaviour. © The Royal Society of Chemistry. |
Source Title: | CrystEngComm |
URI: | http://scholarbank.nus.edu.sg/handle/10635/93321 |
ISSN: | 14668033 |
DOI: | 10.1039/b800797g |
Appears in Collections: | Staff Publications |
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