New silica-gel-bound polyazacycloalkanes and characterization of their copper(II) complexes using electron spin resonance spectroscopy
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 7,p. 1209-1214
- https://doi.org/10.1039/dt9960001209
Abstract
Several tetraazamacrocycle-bonded silica gels have been synthesized and characterized. 1,4,7,10-Tetraazacyclododecane, 1,4,8,11-tetraazacyclotetradecane and 1,5,9,13-tetraazacyclohexadecane have been covalently bound to silica gel and their respective copper(II) complexes characterized. Three different methods were used for capacity determinations: quantitative ESR measurements of copper(II) complexes, nitrogen, carbon and copper elemental analysis and UV/VIS measurements.Keywords
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