Novel example of a chain structure formed by 1,4-dioxane and cobalt(II) links. Chain [Co3(μ-OOCCF3)4(μ-H 2O)2(OOCCF3)2(H2O) 2(C4H8O2)]·2C 4H8O2

Víctor Calvo-Pérez, Sergei Ostrovsky, Andrés Vega, Juraj Pelikan, Evgenia Spodine, Wolfgang Haase

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The trimer [Co3(μ-OOCCF3)4(μ-H 2O)2(OOCCF3)2(H2O) 2(C4H8O2)]·2C 4H8O2 (1) is composed of three tetragonally distorted CoII centers bridged by four trifluoroacetates and two bridging water molecules. 1,4-Dioxane is coordinated at a distance of 2.120(3) Å from the terminal cobalt Co2; the remaining oxygen of this 1,4-dioxane links the terminal cobalt to a neighbor trimer, forming a one-dimensional chain. The crystal structure displays a network of hydrogen bonds between four noncoordinated 1,4-dioxane molecules and the coordinated terminal water molecules. The magnetic properties of 1 were analyzed with the use of the Hamiltonian including isotropic exchange interactions between real spins of a high-spin CoII, spin-orbit coupling and a low-symmetry crystal field acting within the 4T1g ground manifold of each cobalt ion. A weak antiferromagnetic exchange interaction between cobalt ions in 1 was found. The results of the magnetic model are in good agreement with the experimental observations.

Original languageEnglish
Pages (from-to)644-649
Number of pages6
JournalInorganic Chemistry
Volume45
Issue number2
DOIs
Publication statusPublished - 23 Jan 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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