Mössbauer study of a novel binuclear Fe(II/III) delocalized-valence compound

X. Q. Ding; E. L. Bominaar; E. Bill; H. Winkler; A. X. Trautwein; S. Drüeke; PH Chaudhuri; K. Wieghardt

doi:10.1007/BF02101058

Mössbauer study of a novel binuclear Fe(II/III) delocalized-valence compound

X. Q. Ding^*, E. L. Bominaar, E. Bill, H. Winkler, A. X. Trautwein, S. Drüeke, PH Chaudhuri, K. Wieghardt

^*Corresponding author for this work

Institute of Physics

Ruhr-University Bochum

11 Citations (Scopus)

Abstract

In this paper, we briefly summarize the main conclusions of the Mössbauer analysis of [L₂Fe₂(μ-OH)₃] (ClO₄)₂·2CH₃OH·2H₂O with L=N,N',N"-trimethyl-1,4,7-triazacyclononane, a novel dimeric iron compound, which possesses a central exchange-coupled delocalized-valence Fe(II/III) unit. The complete delocalization of the excess electron in the dimeric iron center is concluded from the indistinguishability of the two iron sites in Mössbauer spectroscopy. The magnetic Mössbauer spectra imply a system spin S_t=9/2 for the dimer in its ground state. The values for hyperfine and spin-Hamiltonian parameters, obtained from simulations of the Mössbauer spectra, are δ=0.74 mms^-1, ΔE_Q=-2.14 mms^-1, A_⊥=-10.6 T, A_∥=-13.5 T and D=1.8 cm^-1. The system spin S_t=9/2 is interpreted to be a consequence of double-exchange coupling.

Original language	English
Journal	Hyperfine Interactions
Volume	53
Issue number	1-4
Pages (from-to)	311-315
Number of pages	5
ISSN	0304-3843
DOIs	https://doi.org/10.1007/BF02101058
Publication status	Published - 01.07.1990

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@article{1ce6c1ee80fc4b4cb7c389e9cac14c4b,

title = "M{\"o}ssbauer study of a novel binuclear Fe(II/III) delocalized-valence compound",

abstract = "In this paper, we briefly summarize the main conclusions of the M{\"o}ssbauer analysis of [L2Fe2(μ-OH)3] (ClO4)2·2CH3OH·2H2O with L=N,N',N{"}-trimethyl-1,4,7-triazacyclononane, a novel dimeric iron compound, which possesses a central exchange-coupled delocalized-valence Fe(II/III) unit. The complete delocalization of the excess electron in the dimeric iron center is concluded from the indistinguishability of the two iron sites in M{\"o}ssbauer spectroscopy. The magnetic M{\"o}ssbauer spectra imply a system spin St=9/2 for the dimer in its ground state. The values for hyperfine and spin-Hamiltonian parameters, obtained from simulations of the M{\"o}ssbauer spectra, are δ=0.74 mms-1, ΔEQ=-2.14 mms-1, A⊥=-10.6 T, A∥=-13.5 T and D=1.8 cm-1. The system spin St=9/2 is interpreted to be a consequence of double-exchange coupling.",

author = "Ding, \{X. Q.\} and Bominaar, \{E. L.\} and E. Bill and H. Winkler and Trautwein, \{A. X.\} and S. Dr{\"u}eke and PH Chaudhuri and K. Wieghardt",

year = "1990",

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doi = "10.1007/BF02101058",

language = "English",

volume = "53",

pages = "311--315",

journal = "Hyperfine Interactions",

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TY - JOUR

T1 - Mössbauer study of a novel binuclear Fe(II/III) delocalized-valence compound

AU - Ding, X. Q.

AU - Bominaar, E. L.

AU - Bill, E.

AU - Winkler, H.

AU - Trautwein, A. X.

AU - Drüeke, S.

AU - Chaudhuri, PH

AU - Wieghardt, K.

PY - 1990/7/1

Y1 - 1990/7/1

N2 - In this paper, we briefly summarize the main conclusions of the Mössbauer analysis of [L2Fe2(μ-OH)3] (ClO4)2·2CH3OH·2H2O with L=N,N',N"-trimethyl-1,4,7-triazacyclononane, a novel dimeric iron compound, which possesses a central exchange-coupled delocalized-valence Fe(II/III) unit. The complete delocalization of the excess electron in the dimeric iron center is concluded from the indistinguishability of the two iron sites in Mössbauer spectroscopy. The magnetic Mössbauer spectra imply a system spin St=9/2 for the dimer in its ground state. The values for hyperfine and spin-Hamiltonian parameters, obtained from simulations of the Mössbauer spectra, are δ=0.74 mms-1, ΔEQ=-2.14 mms-1, A⊥=-10.6 T, A∥=-13.5 T and D=1.8 cm-1. The system spin St=9/2 is interpreted to be a consequence of double-exchange coupling.

AB - In this paper, we briefly summarize the main conclusions of the Mössbauer analysis of [L2Fe2(μ-OH)3] (ClO4)2·2CH3OH·2H2O with L=N,N',N"-trimethyl-1,4,7-triazacyclononane, a novel dimeric iron compound, which possesses a central exchange-coupled delocalized-valence Fe(II/III) unit. The complete delocalization of the excess electron in the dimeric iron center is concluded from the indistinguishability of the two iron sites in Mössbauer spectroscopy. The magnetic Mössbauer spectra imply a system spin St=9/2 for the dimer in its ground state. The values for hyperfine and spin-Hamiltonian parameters, obtained from simulations of the Mössbauer spectra, are δ=0.74 mms-1, ΔEQ=-2.14 mms-1, A⊥=-10.6 T, A∥=-13.5 T and D=1.8 cm-1. The system spin St=9/2 is interpreted to be a consequence of double-exchange coupling.

UR - https://www.scopus.com/pages/publications/0002046420

U2 - 10.1007/BF02101058

DO - 10.1007/BF02101058

M3 - Journal articles

AN - SCOPUS:0002046420

SN - 0304-3843

VL - 53

SP - 311

EP - 315

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1-4

ER -

Mössbauer study of a novel binuclear Fe(II/III) delocalized-valence compound

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