Rapid spin-state interconversion in the Bis-complex of tris-(1-pyrazolyl) methane with Fe(II) studied by Mössbauer spectroscopy

H. Winkler; A. X. Trautwein; H. Toftlund

doi:10.1007/BF02397517

Rapid spin-state interconversion in the Bis-complex of tris-(1-pyrazolyl) methane with Fe(II) studied by Mössbauer spectroscopy

H. Winkler^*, A. X. Trautwein, H. Toftlund

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Physik

University of Southern Denmark

20 Zitate (Scopus)

Abstract

Dynamic spin equilibrium is observed in a complex of the [Fe(II)-N₆] type above room temperature. The Mössbauer lineshapes as function of temperature can be understood by means of the random-frequency-modulation model. Taking into accout the different Lamb-Mössbauer factors of the low- and high-spin state yields true populations of the two spin states. The transition rates follow rather well an Arrhenius law. With appropriate assumptions an activation energy ΔE_LH=18(1) kJmol^-1 is deduced.

Originalsprache	Englisch
Zeitschrift	Hyperfine Interactions
Jahrgang	70
Ausgabenummer	1-4
Seiten (von - bis)	1083-1086
Seitenumfang	4
ISSN	0304-3843
DOIs	https://doi.org/10.1007/BF02397517
Publikationsstatus	Veröffentlicht - 01.04.1992

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@article{55afe16aeaf44b339ad6e079fae5fab7,

title = "Rapid spin-state interconversion in the Bis-complex of tris-(1-pyrazolyl) methane with Fe(II) studied by M{\"o}ssbauer spectroscopy",

abstract = "Dynamic spin equilibrium is observed in a complex of the [Fe(II)-N6] type above room temperature. The M{\"o}ssbauer lineshapes as function of temperature can be understood by means of the random-frequency-modulation model. Taking into accout the different Lamb-M{\"o}ssbauer factors of the low- and high-spin state yields true populations of the two spin states. The transition rates follow rather well an Arrhenius law. With appropriate assumptions an activation energy ΔELH=18(1) kJmol-1 is deduced.",

author = "H. Winkler and Trautwein, \{A. X.\} and H. Toftlund",

year = "1992",

month = apr,

day = "1",

doi = "10.1007/BF02397517",

language = "English",

volume = "70",

pages = "1083--1086",

journal = "Hyperfine Interactions",

issn = "0304-3843",

publisher = "Springer Nature",

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TY - JOUR

T1 - Rapid spin-state interconversion in the Bis-complex of tris-(1-pyrazolyl) methane with Fe(II) studied by Mössbauer spectroscopy

AU - Winkler, H.

AU - Trautwein, A. X.

AU - Toftlund, H.

PY - 1992/4/1

Y1 - 1992/4/1

N2 - Dynamic spin equilibrium is observed in a complex of the [Fe(II)-N6] type above room temperature. The Mössbauer lineshapes as function of temperature can be understood by means of the random-frequency-modulation model. Taking into accout the different Lamb-Mössbauer factors of the low- and high-spin state yields true populations of the two spin states. The transition rates follow rather well an Arrhenius law. With appropriate assumptions an activation energy ΔELH=18(1) kJmol-1 is deduced.

AB - Dynamic spin equilibrium is observed in a complex of the [Fe(II)-N6] type above room temperature. The Mössbauer lineshapes as function of temperature can be understood by means of the random-frequency-modulation model. Taking into accout the different Lamb-Mössbauer factors of the low- and high-spin state yields true populations of the two spin states. The transition rates follow rather well an Arrhenius law. With appropriate assumptions an activation energy ΔELH=18(1) kJmol-1 is deduced.

UR - https://www.scopus.com/pages/publications/0000901425

U2 - 10.1007/BF02397517

DO - 10.1007/BF02397517

M3 - Journal articles

AN - SCOPUS:0000901425

SN - 0304-3843

VL - 70

SP - 1083

EP - 1086

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1-4

ER -

Rapid spin-state interconversion in the Bis-complex of tris-(1-pyrazolyl) methane with Fe(II) studied by Mössbauer spectroscopy

Abstract

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