Synthesis, Structure, and Magnetic Characterization of a Series of Iron(II) Coordination Frameworks with 2, 6-Bis(1, 2,4-triazole-4-yl)pyridine

Yue Liu, Jian Zhong Huo, Yuan Yuan Liu, Xiumei Su, Jian Hua Guo, Bin Ding, Xiu Guang Wang, Jun Xia

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Based on the bis-triazole ligand 2, 6-bis(1, 2,4-triazole-4-yl)pyridine (L), the triazole-iron(II) complexes [Fe(L)2(dca)2(H2O)2]·2H2O (1) (Nadca = sodium dicyanamide), {[Fe(μ2-L)2(H2O)2]Cl2}n (2), and {[Fe(μ2-L)2(H2O)2](ClO4)2·L·H2O}n (3) were isolated by solvent diffusion methods. When iron(II) salts and Nadca were used, compound 1 was isolated, which contains mononuclear Fe(L)2(dca)2(H2O)2 units. When FeCl2 or FeClO4 were used, one-dimensional (1D) cation iron(II) chains (2) and two-dimensional (2D) cation iron(II) networks (3) were isolated indicating anion directing structural diversity. Moreover, variable-temperature magnetic susceptibility data of 1-3 were recorded in the temperature range 2-300 K. The magnetic curve of complex 2 was fitted by using the classical spin Heisenberg chain model indicating anti-ferromagnetic interactions (J = -5.31 cm-1). Obviously complexes 1-3 show no detectable thermal spin crossover behaviors, the lack of spin-crossover behavior may be correlated with FeN4O2 coordination spheres in 1-3.

Original languageEnglish
Pages (from-to)2422-2428
Number of pages7
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume641
Issue number14
DOIs
Publication statusPublished - 1 Nov 2015
Externally publishedYes

Keywords

  • 2, 6-Bis(1, 2,4-triazole-4-yl)-pyridine
  • Coordination frameworks
  • Iron
  • Magnetic properties

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