An unprecedented CuII-Schiff base complex existing as two different trinuclear units with strong antiferromagnetic couplings

Aurkie Ray, Dipali Sadhukhan, Georgina M. Rosair, Carlos J. Gómez-García, Samiran Mitra

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A new tetradentate N2O2 donor Schiff base ligand [OHC6H4CH{double bond, long}NCH2CH2CH(CH2CH3)N{double bond, long}CHC6H4OH = H2L ] was obtained by 1:2 condensation of 1,3-diaminopentane with salicylaldehyde and has been used to synthesise an unusual copper(II) complex whose asymmetric unit presents two structurally different almost linear trinuclear units [Cu3(µ-L)2(ClO4)2] [Cu3(µ-L)2(H2O)(ClO4)2] (1). The ligand and the complex were characterised by elemental analysis, FT-IR, 1H NMR and UV-Vis spectroscopy in addition electrochemical and single crystal X-ray diffraction studies were performed for the complex. The magnetic properties of 1 reveal the presence of strong intra-trimer (J1 = -202(3) cm-1 and J2 = -233(3) cm-1) as well as very weak inter-trimer (zJ' = -0.11(1) cm-1) antiferromagnetic interactions. © 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)3542-3550
Number of pages9
JournalPolyhedron
Volume28
Issue number16
DOIs
Publication statusPublished - 3 Nov 2009

Keywords

  • Antiferromagnetic couplings
  • Bent
  • Crystal structures
  • CuII-Schiff base complex
  • Inter-trimer
  • Intra-trimer
  • Linear
  • Trinuclear units

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