Reglinski, J. and Taylor, M.K. and Kennedy, A.R. (2004) N,N'-Bis-(2-methoxybenzylidene) adducts of 1,2-ethanediamine, 1,3-propanediamine and 1,4-butanediamine. Acta Crystallographica Section C: Crystal Structure Communications, 60 (3). o169-o172. ISSN 0108-2701Full text not available in this repository. (Request a copy from the Strathclyde author)
We have isolated and crystallographically characterized the three homologous compounds N,N'-bis(2-methoxybenzylidene)ethane-1,2-diamine (MeSalen), C18H20N2O2, N,N'-bis(2-methoxybenzylidene)propane-1,3-diamine (MeSalpr), C19H22N2O2, and N,N'-bis(2-methoxybenzylidene)butane-1,4-diamine (MeSalbu), C20H24N2O2. In contrast with MeSalpr, the molecules of MeSalen and MeSalbu, which have an even number of methylene units, have crystallographic symmetry. Comparing these methoxy-substituted species with their hydroxy equivalents shows that the aryl rings rotate upon removal of the O - HN hydrogen bonds. The packing of MeSalen and MeSalpr is controlled by C - Hπ interactions, whereas that of MeSalbu has only van der Waals contacts.
|Keywords:||isolated, crystallographically characterized, homologous compounds, MeSalpr, MeSalbu, MeSalen, methylene units, hydroxy equivalents, hydrogen bonds, Chemistry, Biochemistry, Genetics and Molecular Biology(all)|
|Subjects:||Science > Chemistry|
|Department:||Faculty of Science > Pure and Applied Chemistry|
|Depositing user:||Catriona Mccallum|
|Date Deposited:||09 May 2006|
|Last modified:||29 Apr 2016 07:40|