Synthesis, Solid-State Structure, Magnetic Properties and Mössbauer Spectral Studies of {Fe[HC(3,5-Me₂pz)₃](H₂O)₃} (BF₄)₂

Abstract

The reaction of Fe(BF4)2·6H2O and one equivalent of HC(3,5-Me2pz)3 in acetonitrile leads to the formation of {Fe[HC(3,5-Me2pz)3](H2O)3} (BF4)2. The solution phase 1H NMR spectrum is broad with chemical shifts ranging from 54 to -42 ppm, a range that is indicative of a paramagnetic high-spin complex. Magnetic moment measurements show that the complex is paramagnetic in the solid-state with μeff = 4.89μB. The solid-state structure shows the N3FeO3 central core is a distorted octahedron with N-Fe-N angles averaging 84.4° and O-Fe-O angles averaging 90.0°. The average Fe-N distance is 2.18 Å and the average Fe-O bond distance is 2.12 Å. Mössbauer spectra, obtained at 78 and 295 K, clearly reveal that this complex is high-spin at these temperatures with hyperfine parameters typical of a pseudooctahedral iron(II) complex.

Department(s)

Chemistry

Keywords and Phrases

Acetonitrile; Iron Complex; Lead; Nitrogen; Oxygen; Crystal Structure; Crystallography; Drug Synthesis; Magnetism; Mössbauer Spectroscopy; Proton Nuclear Magnetic Resonance; Radiation; Solid State; Temperature; Mössbauer; Pyrazolylmethane Complexes

International Standard Serial Number (ISSN)

0020-1693

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2001 Elsevier Limited, All rights reserved.

Publication Date

01 May 2001

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