Synthesis and magnetic characterization of a dinuclear complex of low-coordinate iron(II)

Ian P. Moseley, Chun Yi Lin, David Z. Zee, Joseph M. Zadrozny

Research output: Contribution to journalArticle

Abstract

Low-coordinate ions possess exciting magnetic, optical, and reactive properties that may afford novel material physics. Hence, it is important to test both synthetic methods for realizing extended solids of such ions as well as the properties of smaller molecular fragments of envisioned future materials. Herein, we report the synthesis and characterization of a new dinuclear Fe species, [{(Me3Si2)2N}Fe{μ-p-{HN(SiMe3)}(C6Me4){N(SiMe3)}}2Fe{N(SiMe3)2}] (1), formed through a transamination reaction between [Fe{N(SiMe3)2}2]2 and the bulky diamine p-{HN(SiMe3)}2(C6Me4) (L). The Fe centers of this dimer assume a pseudo-trigonal-planar, three-coordinate conformation in 1, bridged by two aromatic diamines. Single-crystal X-ray diffraction, IR spectroscopy, and Mössbauer spectroscopy enable the assignment of both Fe centers as the 2+ oxidation state. Magnetic studies show that 1 displays a weak antiferromagnetic exchange interaction (J = −2.33 cm−1) and moderate zero-field splitting (D = 7.51 cm−1). Importantly, these studies demonstrate the viability of using transamination to bridge high-spin low-coordinate metal ions and hence the technique may, in the future, produce new extended structures.

Original languageEnglish
Article number114171
JournalPolyhedron
Volume175
DOIs
Publication statusPublished - 2020 Jan 1

Fingerprint

Diamines
Iron
Ions
diamines
iron
Exchange interactions
synthesis
Dimers
Metal ions
Conformations
Infrared spectroscopy
Physics
Display devices
Single crystals
Spectroscopy
viability
X ray diffraction
Oxidation
spectroscopy
metal ions

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Moseley, Ian P. ; Lin, Chun Yi ; Zee, David Z. ; Zadrozny, Joseph M. / Synthesis and magnetic characterization of a dinuclear complex of low-coordinate iron(II). In: Polyhedron. 2020 ; Vol. 175.
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Synthesis and magnetic characterization of a dinuclear complex of low-coordinate iron(II). / Moseley, Ian P.; Lin, Chun Yi; Zee, David Z.; Zadrozny, Joseph M.

In: Polyhedron, Vol. 175, 114171, 01.01.2020.

Research output: Contribution to journalArticle

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