Issue 4, 2015

Self-assembled trinuclear arsenic and antimony macrobicycles

Abstract

The synthesis of six trinuclear Pn3L2 macrobicycles (Pn = As, Sb) was achieved by self-assembly of a pnictogen trichloride and a 2,4,6-trisubstituted-1,3,5-benzenetrimethanethiol ligand. 1H-NMR spectroscopy reveals self-assembly in 1,1,2,2-tetrachloroethane is dynamic in solution producing two structural isomers. The symmetric and the asymmetric isomers (in which a single chloride ligand is cast in an opposing direction from other chlorides) of the As3L2 complexes exist in a ca. 2 : 1 distribution, whereas only the symmetric isomer is observed in solution for Sb3L2. Solvent effects appear to influence conformational isomerism and conversion to the final products. Macrobicycles were confirmed by 1H-NMR spectroscopy and X-ray crystallography and further studied by MP2/LANL2DZ optimizations.

Graphical abstract: Self-assembled trinuclear arsenic and antimony macrobicycles

Supplementary files

Article information

Article type
Edge Article
Submitted
30 Dec 2014
Accepted
02 Feb 2015
First published
18 Feb 2015
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2015,6, 2444-2448

Author version available

Self-assembled trinuclear arsenic and antimony macrobicycles

M. S. Collins, R. Y. Choi, L. N. Zakharov, L. A. Watson, B. P. Hay and D. W. Johnson, Chem. Sci., 2015, 6, 2444 DOI: 10.1039/C4SC04042B

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