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Ligands for application in coordination chemistry: three dicarboxylic acids

Ferguson, George and Gallagher, John F. and McAlees, Alan J. (1995) Ligands for application in coordination chemistry: three dicarboxylic acids. Acta Crystallographica Section C, 51 (3). pp. 454-458. ISSN 0108-2701

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Three potential ligand molecules have been investigated. 6,6'-o-Phenylenedioxybis(2,2-dimethyl-4-oxahexanoic acid), C20H3008 (I), has twofold crystallographic symmetry and adopts a conformation in which the two pendant carboxylic arms minimize any potential molecular cavity between them; zigzag polymeric chains are formed as a result of C==O .. .H--O hydrogen bonding about inversion centers. 2,2,9,9-Tetramethyl- 4,7-dioxadecanedioic acid, C12H2206 (II), also forms polymeric hydrogen-bonded chains involving the carboxylic acid moieties but differs from (I) in its molecular conformation. 2,2,6,6,10,10-Hexamethyl-4,8- dioxaundecanedioic acid, Ci5H2806 (III), forms discrete rectangular-shaped centrosymmetric dimers in which any potential molecular cavity is minimized as a result of the close proximity of two of the pendant etheral arms.

Item Type:Article (Published)
Subjects:Physical Sciences > Organic chemistry
Physical Sciences > Crystallography
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
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Copyright Information:© 1995 International Union of Crystallography
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:2474
Deposited On:11 Mar 2009 17:52 by DORAS Administrator. Last Modified 11 Mar 2009 17:52

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