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The intramolecular hydrogen bonds in some Schiff bases derived from dendrimers: DAB-Am-8 and PAMAM-G2

✍ Scribed by W. Schilf; B. Kołodziej; E. Grech

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 100 KB
Volume: 791
Category: Article
ISSN: 0022-2860
DOI: 10.1016/j.molstruc.2006.01.010

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✦ Synopsis

The hydrogen bonding in some DAB-Am-8 and PAMAM-G2 dendrimer derivatives have been investigated by heteronuclear NMR techniques in solution. The proton positions in the bridges ware estimated on the base of nitrogen chemical shift of imine atom. Some dynamic effects connected with different segmental motion of particular parts of the molecules were found by analysis of spectral line widths.

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The intramolecular hydrogen bonds in some Schiff bases derived from cyclopropyl-, cyclobutyl- and cyclopentylamine

✍ W. Schilf; B. Kamieński; A. Szady-Chełmieniecka; E. Grech 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 90 KB

Eight Schiff bases (N-(R-salicylidene)-cycloalkilamines, RZH, 5-NO 2 and 5-Br) obtained from cyclopropyl, cyclobutyl-and cyclopentylamine were investigated in terms of intramolecular hydrogen bond formation in chloroform solution and in the solid state. The relationship between cycloalkyl ring size