MnIII zero-field splitting parameters and weak exchange interactions in a cyanide-bridged {MnIII–IrIII–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^III–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

Department of Chemistry

5 Citations (Scopus)

Abstract

The reaction of [Mn ^III(5-Brsalen)(MeOH)](ClO ₄) (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 |E| = 0.21(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
Number of pages	5
ISSN	1387-7003
DOIs	https://doi.org/10.1016/j.inoche.2012.07.045
Publication status	Published - Oct 2012

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@article{c2a3a87fc1314bab97e59b300d7f5384,

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

abstract = "The reaction of [Mn III(5-Brsalen)(MeOH)](ClO 4) (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 |E| = 0.21(1) cm - 1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two Mn III 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",

month = oct,

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

language = "English",

volume = "24",

pages = "24--28",

journal = "Inorganic Chemistry Communications",

issn = "1387-7003",

publisher = "Elsevier",

}

TY - JOUR

T1 - MnIII zero-field splitting parameters and weak exchange interactions in a cyanide-bridged {MnIII–IrIII–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 - 2012/10

Y1 - 2012/10

N2 - The reaction of [Mn III(5-Brsalen)(MeOH)](ClO 4) (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 |E| = 0.21(1) cm - 1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two Mn III ions.

AB - The reaction of [Mn III(5-Brsalen)(MeOH)](ClO 4) (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 |E| = 0.21(1) cm - 1. The experimental data are consistent with a small, antiferromagnetic exchange interaction between the two Mn III ions.

U2 - 10.1016/j.inoche.2012.07.045

DO - 10.1016/j.inoche.2012.07.045

M3 - Journal article

SN - 1387-7003

VL - 24

SP - 24

EP - 28

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

ER -

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

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