Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice

Ying Ji Sun, Long Yi, Xing Yang, Yang Liu, Peng Cheng, Dai Zheng Liao, Shi Ping Yan, Zong Hui Jiang

Research output: Contribution to journalArticlepeer-review

Abstract

The structures of two novel iron(III) complexes indicate that they have [FeTp2]+ cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS)6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility results also show that there are double spin states of iron(III) ions within the crystal lattice. The reaction of FeCl3 • 6H2O, potassium hydrotris(pyrazolyl)borate (KTp) and KSCN gives [FeTp2][TpFe(NCS)3] (1) and [FeTp2]3[Fe(NCS)6] (2), respectively. The bond lengths and angles indicate that both complexes have [FeTp2] + cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS) 6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility and ESR results also show that there are double spin states of iron(III) ions within the crystal lattice of both compounds.

Original languageEnglish (US)
Pages (from-to)396-402
Number of pages7
JournalInorganica Chimica Acta
Volume358
Issue number2
DOIs
StatePublished - Jan 25 2005

Keywords

  • ESR
  • High-spin
  • Iron complexes
  • KTp
  • Low-spin
  • Magnetic properties

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice'. Together they form a unique fingerprint.

Cite this