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Synthesis, molecular and supramolecular structures, electrochemistry and magnetic properties of two macrocyclic dicopper(II) complexes: Microporous supramolecular assembly
S HAZRA, S MAJUMDER, N ALIAGA-ALCALDE,
Published in PERGAMON-ELSEVIER SCIENCE LTD
2009
Volume: 28
   
Issue: 17
Pages: 3707 - 3714
Abstract
Synthesis, molecular and supramolecular structures, electrochemistry and magnetic properties of two diphenoxo-bridged dicopper(II) compounds [CuII2L(H2O)(ClO4)]·ClO4·2H2O (1) and [CuII2L(N3)2]·2H2O (2) derived from a tetraimino diphenolate macrocyclic ligand H2L, obtained on [2+2] condensation of 4-methyl-2,6-diformylphenol and 2,2′-dimethyl-1,3-diaminopropane, are presented. Supramolecular structure of both 1 and 2 are three-dimensional resulting from hydrogen bonding interactions. Interestingly, the 3-D self-assembly of 2 contains micropores having the dimension of 0.35 nm. Electrochemical analyses reveal that both of these compounds exhibit two-step couples in the reduction window. Variable-temperature (2-300 K) magnetic susceptibilities measurements of the two compounds reveal that the metal centers in both of the complexes are coupled by strong antiferromagnetic interactions with J values (H = -JS1·S2) -776 and -836 cm-1 for 1 and 2, respectively. © 2009 Elsevier Ltd. All rights reserved.
About the journal
JournalData powered by TypesetPolyhedron
PublisherData powered by TypesetPERGAMON-ELSEVIER SCIENCE LTD
ISSN0277-5387
Open AccessNo