Your browser doesn't support javascript.
loading
Coordination Complexes of a Neutral 1,2,4-Benzotriazinyl Radical Ligand: Synthesis, Molecular and Electronic Structures, and Magnetic Properties.
Morgan, Ian S; Mansikkamäki, Akseli; Zissimou, Georgia A; Koutentis, Panayiotis A; Rouzières, Mathieu; Clérac, Rodolphe; Tuononen, Heikki M.
Afiliação
  • Morgan IS; Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä (Finland). ian.s.morgan@jyu.fi.
  • Mansikkamäki A; Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä (Finland).
  • Zissimou GA; Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia (Cyprus).
  • Koutentis PA; Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia (Cyprus).
  • Rouzières M; CNRS, CRPP, UPR 8641, 33600 Pessac (France).
  • Clérac R; Univ. Bordeaux, CRPP, UPR 8641, 33600 Pessac (France).
  • Tuononen HM; CNRS, CRPP, UPR 8641, 33600 Pessac (France).
Chemistry ; 21(44): 15843-53, 2015 Oct 26.
Artigo em Inglês | MEDLINE | ID: mdl-26493885
ABSTRACT
A series of d-block metal complexes of the recently reported coordinating neutral radical ligand 1-phenyl-3-(pyrid-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl (1) was synthesized. The investigated systems contain the benzotriazinyl radical 1 coordinated to a divalent metal cation, Mn(II) , Fe(II) , Co(II) , or Ni(II) , with 1,1,1,5,5,5-hexafluoroacetylacetonato (hfac) as the auxiliary ligand of choice. The synthesized complexes were fully characterized by single-crystal X-ray diffraction, magnetic susceptibility measurements, and electronic structure calculations. The complexes [Mn(1)(hfac)2 ] and [Fe(1)(hfac)2 ] displayed antiferromagnetic coupling between the unpaired electrons of the ligand and the metal cation, whereas the interaction was found to be ferromagnetic in the analogous Ni(II) complex [Ni(1)(hfac)2 ]. The magnetic properties of the complex [Co(1)(hfac)2 ] were difficult to interpret owing to significant spin-orbit coupling inherent to octahedral high-spin Co(II) metal ion. As a whole, the reported data clearly demonstrated the favorable coordinating properties of the radical 1, which, together with its stability and structural tunability, make it an excellent new building block for establishing more complex metal-radical architectures with interesting magnetic properties.

Similares

MEDLINE

...
LILACS

LIS

Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Chemistry Assunto da revista: Química Ano de publicação: 2015 Tipo de documento: Artigo