Jump to main content
Jump to site search

Issue 8, 2017
Previous Article Next Article

LnIII–CoII heterometallic chains based on pyridine substituted nitronyl nitroxides

Author affiliations

Abstract

Four novel nitronyl nitroxide bridged heterometallic one-dimensional chains, [Ln(hfac)3Co(hfac)2(NIT-4py)2] (LnIII = Y 1, Gd 2, Dy 3) and [Dy(hfac)3Co(hfac)2(NIT-3py)2] 4 (hfac = hexafluoroacetylacetonate; NIT-4py = 2-(4-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide; NIT-3py = 2-(3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide), have been prepared and characterized. Complexes 1–4 exhibit a 1D chain structure in which Ln(hfac)3 and Co(hfac)2 units are linked by pyridine substituted nitronyl nitroxides through the NO groups of the radicals and the nitrogen atoms of pyridine rings. Complexes 1–4 represent the first examples of 2p–3d–4f compounds containing Co(II) ions. The magnetic properties of these compounds were investigated. The magnetic behavior of the Y(III)–Co(II) complex has been analyzed by using an appropriate magnetic model, which indicates an antiferromagnetic interaction between the Co(II) ion and the radical. The ac magnetic susceptibility measurements of compound 4 display slow relaxation of its magnetization.

Graphical abstract: LnIII–CoII heterometallic chains based on pyridine substituted nitronyl nitroxides

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 09 Dec 2016, accepted on 07 Mar 2017 and first published on 08 Mar 2017


Article type: Paper
DOI: 10.1039/C6NJ03849B
Citation: New J. Chem., 2017,41, 2973-2979
  •   Request permissions

    LnIII–CoII heterometallic chains based on pyridine substituted nitronyl nitroxides

    X. Wang, H. Li, J. Sun, M. Yang, C. Li and L. Li, New J. Chem., 2017, 41, 2973
    DOI: 10.1039/C6NJ03849B

Search articles by author