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Boletín de la Sociedad Chilena de Química
versão impressa ISSN 0366-1644
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DIAZ, C. e VALENZUELA, M.L.. Dendrimers based on cyclophosphazene unit and containing iron (III). Bol. Soc. Chil. Quím. [online]. 2000, vol.45, n.4, pp.527-533. ISSN 0366-1644. http://dx.doi.org/10.4067/S0366-16442000000400003.
The complexes [N3P3(OC6H5)5OC6H4CH2CN.FeCl2]PF6 (1) and [N3P3(OC6H4CH2CN)6. (FeCl2)6](PF6)6 (2) have been syntethyzed by reaction of the corresponding cyclophosphazene ligands: N3P3(OC6H5)5OC6H4CH2CN (3) and N3P3(OC6H4CH2CN)6 (4) with FeCl3 in CH3OH as solvent and in presence of NH4PF6. The new compounds were characterized by elemental analysis and IR, UV-Visible and EPR spectroscopy as well as electrochemical methods. The hexametalladendrimers exhibits a six-electron reduction while that the monometalladendrimers exhibit a single one-electron reduction. The paramagnetic complexes exhibit strong EPR signals in solid as well as in CH2Cl2 solution.
Palavras-chave : Dendrimers; cyclophosphazene; iron; nitrile complexes.