N,N′-Bis(3-methoxysalicylidene)propane-1,2-diamine mononuclear 4f and heterodinuclear Cu-4f complexes: Synthesis, crystal structure and electrochemical properties
In: Inorganica Chimica Acta, Jg. 362 (2009-04-20), Heft 6, S. 1761-1766
academicJournal
Zugriff:
Abstract: Reactions of H2L [H2L= N,N′-bis(3-methoxysalicylidene)propane-1,2-diamine] and Ln(NO3)3 ·6H2O give rise to two different mononuclear 4f complexes, namely, {[(H2L)La(NO3)3(MeOH)]·H2O} n (1) and [(H2L)Nd(NO3)3] (2). Further additions of Cu(Ac)2 ·H2O to the mononuclear 4f complexes yield expected heterodinuclear Cu-4f complexes [LCu(Me2CO)Ln(NO3)3] (3, Ln=Nd; 4, Ln=Eu; 5, Ln=Dy). Complex 1 is a unique 1D polymeric chain structure, and 2 is one of the few structurally characterized discrete hexadentate salen-type mononuclear 4f complexes. Complexes 3–5 are similar to their analogues. However, they are prepared by a reversed synthetic route in contrast to their isomorphic complexes. Electrochemical behavior of heterodinuclear Cu-4f complexes 3–5 has been examined by cyclic voltammetry in acetonitrile. The redox potential of heterodinuclear Cu-4f complexes 3–5 shows significant anodic shift comparing to that of mononuclear copper complex (LCu). A tendency of anodic shift was observed in a sequence of 3 < 4 < 5. This results from the modulating effect of coordination geometry around Cu(II) ion on redox potential. [Copyright &y& Elsevier]
Titel: |
N,N′-Bis(3-methoxysalicylidene)propane-1,2-diamine mononuclear 4f and heterodinuclear Cu-4f complexes: Synthesis, crystal structure and electrochemical properties
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Autor/in / Beteiligte Person: | Sun, Wen-Bin ; Yan, Peng-Fei ; Li, Guang-Ming ; Zhang, Ju-Wen ; Xu, Hui |
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Zeitschrift: | Inorganica Chimica Acta, Jg. 362 (2009-04-20), Heft 6, S. 1761-1766 |
Veröffentlichung: | 2009 |
Medientyp: | academicJournal |
ISSN: | 0020-1693 (print) |
DOI: | 10.1016/j.ica.2008.08.016 |
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