MnIII zero-field splitting parameters and weak exchange interactions in a cyanide-bridged {MnIII-IrΙΙI-MnIII} cluster

Kasper Steen Pedersen; Marc Sigrist; Høgni Weihe; Philip L. W. Tregenna-Piggott; Magnus Schau-Magnussen; Jan Dreiser; Hannu Mutka; Anne-Laure Barra; Jesper Bendix

doi:10.1016/j.inoche.2012.07.045

Mn^III zero-field splitting parameters and weak exchange interactions in a cyanide-bridged {Mn^III-Ir^ΙΙI-Mn^III} cluster

Kasper Steen Pedersen, Marc Sigrist, Høgni Weihe, Philip L. W. Tregenna-Piggott, Magnus Schau-Magnussen, Jan Dreiser, Hannu Mutka, Anne-Laure Barra, Jesper Bendix

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The reaction of [Mn^III(5-Brsalen)(MeOH)](ClO₄) (5-Brsalen^2-=N,N'-ethylenebis(5-bromosalicylidene-iminate)) with [Ir^III(CN)₆]^3- yields a trinuclear, cyanide-bridged Mn^III-(Ir^III-Mn^III) cluster which is a member of an isostructural series of Mn^III-M^III-Mn^III clusters. The presence of the large, diamagnetic [Ir^III(CN)₆]^3- bridging unit facilitates a precise determination of the Mn^III zero-field splitting (zfs) parameters by the combined use of inelastic neutron scattering, high-field, high-frequency EPR spectroscopy and magnetic measurements. The single-ion axial (D) and rhombic (E) zfs parameters are found to be D = - 3.72(5) cm^-1 and vertical bar E vertical bar=021(1) cm^-1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two Mn^III ions.

Original language	English
Journal	Inorganic Chemistry Communications
Volume	24
Pages (from-to)	24-28
ISSN	1879-0259
DOIs	https://doi.org/10.1016/j.inoche.2012.07.045
Publication status	Published - 2012
Externally published	Yes

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@article{8ffd0552148a42a4a72bdc05024820a7,

title = "MnIII zero-field splitting parameters and weak exchange interactions in a cyanide-bridged {MnIII-IrΙΙI-MnIII} cluster",

abstract = "The reaction of [MnIII(5-Brsalen)(MeOH)](ClO4) (5-Brsalen2-=N,N'-ethylenebis(5-bromosalicylidene-iminate)) with [IrIII(CN)6]3- yields a trinuclear, cyanide-bridged MnIII-(IrIII-MnIII) cluster which is a member of an isostructural series of MnIII-MIII-MnIII clusters. The presence of the large, diamagnetic [IrIII(CN)6]3- bridging unit facilitates a precise determination of the MnIII zero-field splitting (zfs) parameters by the combined use of inelastic neutron scattering, high-field, high-frequency EPR spectroscopy and magnetic measurements. The single-ion axial (D) and rhombic (E) zfs parameters are found to be D = - 3.72(5) cm-1 and vertical bar E vertical bar=021(1) cm-1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two MnIII ions.",

author = "Pedersen, {Kasper Steen} and Marc Sigrist and H{\o}gni Weihe and Tregenna-Piggott, {Philip L. W.} and Magnus Schau-Magnussen and Jan Dreiser and Hannu Mutka and Anne-Laure Barra and Jesper Bendix",

year = "2012",

doi = "10.1016/j.inoche.2012.07.045",

language = "English",

volume = "24",

pages = "24--28",

journal = "Inorganic Chemistry Communications",

issn = "1879-0259",

publisher = "Elsevier",

}

TY - JOUR

T1 - MnIII zero-field splitting parameters and weak exchange interactions in a cyanide-bridged {MnIII-IrΙΙI-MnIII} cluster

AU - Pedersen, Kasper Steen

AU - Sigrist, Marc

AU - Weihe, Høgni

AU - Tregenna-Piggott, Philip L. W.

AU - Schau-Magnussen, Magnus

AU - Dreiser, Jan

AU - Mutka, Hannu

AU - Barra, Anne-Laure

AU - Bendix, Jesper

PY - 2012

Y1 - 2012

N2 - The reaction of [MnIII(5-Brsalen)(MeOH)](ClO4) (5-Brsalen2-=N,N'-ethylenebis(5-bromosalicylidene-iminate)) with [IrIII(CN)6]3- yields a trinuclear, cyanide-bridged MnIII-(IrIII-MnIII) cluster which is a member of an isostructural series of MnIII-MIII-MnIII clusters. The presence of the large, diamagnetic [IrIII(CN)6]3- bridging unit facilitates a precise determination of the MnIII zero-field splitting (zfs) parameters by the combined use of inelastic neutron scattering, high-field, high-frequency EPR spectroscopy and magnetic measurements. The single-ion axial (D) and rhombic (E) zfs parameters are found to be D = - 3.72(5) cm-1 and vertical bar E vertical bar=021(1) cm-1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two MnIII ions.

AB - The reaction of [MnIII(5-Brsalen)(MeOH)](ClO4) (5-Brsalen2-=N,N'-ethylenebis(5-bromosalicylidene-iminate)) with [IrIII(CN)6]3- yields a trinuclear, cyanide-bridged MnIII-(IrIII-MnIII) cluster which is a member of an isostructural series of MnIII-MIII-MnIII clusters. The presence of the large, diamagnetic [IrIII(CN)6]3- bridging unit facilitates a precise determination of the MnIII zero-field splitting (zfs) parameters by the combined use of inelastic neutron scattering, high-field, high-frequency EPR spectroscopy and magnetic measurements. The single-ion axial (D) and rhombic (E) zfs parameters are found to be D = - 3.72(5) cm-1 and vertical bar E vertical bar=021(1) cm-1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two MnIII ions.

U2 - 10.1016/j.inoche.2012.07.045

DO - 10.1016/j.inoche.2012.07.045

M3 - Journal article

SN - 1879-0259

VL - 24

SP - 24

EP - 28

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications