Synthesis and Characterization of Two Isomeric, Self-Assembled Arsenic−Thiolate Macrocycles

The use of labile As−S bond formation in the self-assembly of discrete supramolecular structures is extended. Macrocyclic structures of chemical formula As2 L 2Cl2 (H2 L = α,α‘-dimercapto-p-xylene) were prepared and characterized. Diastereomeric syn and anti isomers of these macrocycles were selecti...

Full description

Saved in:
Bibliographic Details
Published in:Inorganic chemistry 2005-12, Vol.44 (25), p.9247-9252
Main Authors: Vickaryous, W. Jake, Healey, Elisabeth Rather, Berryman, Orion B, Johnson, Darren W
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The use of labile As−S bond formation in the self-assembly of discrete supramolecular structures is extended. Macrocyclic structures of chemical formula As2 L 2Cl2 (H2 L = α,α‘-dimercapto-p-xylene) were prepared and characterized. Diastereomeric syn and anti isomers of these macrocycles were selectively crystallized and characterized in the solid state using single-crystal X-ray diffraction. Both the syn and anti macrocycles show close contacts between the arsenic(III) ions and the aromatic carbons, consistent with intramolecular arsenic−π interactions. The dynamic behavior of the isomers in solution is also investigated. anti-As2 L 2Cl2·AsCl3 crystallizes in monoclinic space group P21/c (No. 14) with a = 10.6194(5) Å, b = 16.7780(9) Å, c = 8.5725(4) Å, β = 100.6830(10)°, and Z = 2. syn-As2 L 2Cl2 crystallizes in orthorhombic space group Pnma (No. 62) with a = 10.8881(8) Å, b = 19.3511(14) Å, c = 9.9524(7) Å, and Z = 4.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic050954w