Ferromagnetic interaction and metallic conductivity of radical ion salts (DIEDO)2M(mnt)2 ( M = Ni, Pt)

J. Nishijo; E. Ogura; J. Yamaura; A. Miyazaki; T. Enoki; T. Takano; Y. Kuwatani; M. Iyoda

doi:10.1016/S0379-6779(02)00283-7

Ferromagnetic interaction and metallic conductivity of radical ion salts (DIEDO)₂M(mnt)₂ ( M = Ni, Pt)

J. Nishijo^*, E. Ogura, J. Yamaura, A. Miyazaki, T. Enoki, T. Takano, Y. Kuwatani, M. Iyoda

^*Corresponding author for this work

Applied Chemistry

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

48 Scopus citations

Abstract

(DIEDO)₂M(mnt)₂ (M = Ni, Pt; DIEDO = 4,5-diiodo-4′,5′-ethylenedioxytetrathiafulvalene; mnt: maleonitriledithiolate) composed of transition metal complexes and iodine-bonded donor have a unique structure featured with strong coordination-bond-like interaction between iodo group of donor and cyano group of anion. It consists of two donor chains sandwiched between anion chains. The salts are metallic down to 100 K, followed by an onset of a metal-insulator (M-I) transition. T_MI becomes lowered at high pressures (21 K at P > 11 kbar). The magnetic susceptibility suggests the presence of ferromagnetic interactions (J∼20K) between localized magnetic moments of M(mnt)₂^-, which interact with conduction electrons. The origin of ferromagnetic interactions is explained by McConnell's first model and small overlaps between SOMOs of M(mnt)₂^-.

Original language	English
Pages (from-to)	539-541
Number of pages	3
Journal	Synthetic Metals
Volume	133-134
DOIs	https://doi.org/10.1016/S0379-6779(02)00283-7
State	Published - 2003/03/13
Event	ISCOM 2001 - Rusutsu, Hokkaido, Japan Duration: 2001/09/10 → 2001/09/14

Keywords

Ferromagnetic interaction
Molecular magnet
Organic metal
π-d interaction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0379-6779(02)00283-7

Cite this

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title = "Ferromagnetic interaction and metallic conductivity of radical ion salts (DIEDO)2M(mnt)2 ( M = Ni, Pt)",

abstract = "(DIEDO)2M(mnt)2 (M = Ni, Pt; DIEDO = 4,5-diiodo-4′,5′-ethylenedioxytetrathiafulvalene; mnt: maleonitriledithiolate) composed of transition metal complexes and iodine-bonded donor have a unique structure featured with strong coordination-bond-like interaction between iodo group of donor and cyano group of anion. It consists of two donor chains sandwiched between anion chains. The salts are metallic down to 100 K, followed by an onset of a metal-insulator (M-I) transition. TMI becomes lowered at high pressures (21 K at P > 11 kbar). The magnetic susceptibility suggests the presence of ferromagnetic interactions (J∼20K) between localized magnetic moments of M(mnt)2-, which interact with conduction electrons. The origin of ferromagnetic interactions is explained by McConnell's first model and small overlaps between SOMOs of M(mnt)2-.",

keywords = "Ferromagnetic interaction, Molecular magnet, Organic metal, π-d interaction",

author = "J. Nishijo and E. Ogura and J. Yamaura and A. Miyazaki and T. Enoki and T. Takano and Y. Kuwatani and M. Iyoda",

note = "Funding Information: This work is supported by a Grant-in-Aid for Scientific Research No. 12046231 from the Ministry of Education, Science, Sport and Culture.; ISCOM 2001 ; Conference date: 10-09-2001 Through 14-09-2001",

year = "2003",

month = mar,

day = "13",

doi = "10.1016/S0379-6779(02)00283-7",

language = "英語",

volume = "133-134",

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TY - JOUR

T1 - Ferromagnetic interaction and metallic conductivity of radical ion salts (DIEDO)2M(mnt)2 ( M = Ni, Pt)

AU - Nishijo, J.

AU - Ogura, E.

AU - Yamaura, J.

AU - Miyazaki, A.

AU - Enoki, T.

AU - Takano, T.

AU - Kuwatani, Y.

AU - Iyoda, M.

N1 - Funding Information: This work is supported by a Grant-in-Aid for Scientific Research No. 12046231 from the Ministry of Education, Science, Sport and Culture.

PY - 2003/3/13

Y1 - 2003/3/13

N2 - (DIEDO)2M(mnt)2 (M = Ni, Pt; DIEDO = 4,5-diiodo-4′,5′-ethylenedioxytetrathiafulvalene; mnt: maleonitriledithiolate) composed of transition metal complexes and iodine-bonded donor have a unique structure featured with strong coordination-bond-like interaction between iodo group of donor and cyano group of anion. It consists of two donor chains sandwiched between anion chains. The salts are metallic down to 100 K, followed by an onset of a metal-insulator (M-I) transition. TMI becomes lowered at high pressures (21 K at P > 11 kbar). The magnetic susceptibility suggests the presence of ferromagnetic interactions (J∼20K) between localized magnetic moments of M(mnt)2-, which interact with conduction electrons. The origin of ferromagnetic interactions is explained by McConnell's first model and small overlaps between SOMOs of M(mnt)2-.

AB - (DIEDO)2M(mnt)2 (M = Ni, Pt; DIEDO = 4,5-diiodo-4′,5′-ethylenedioxytetrathiafulvalene; mnt: maleonitriledithiolate) composed of transition metal complexes and iodine-bonded donor have a unique structure featured with strong coordination-bond-like interaction between iodo group of donor and cyano group of anion. It consists of two donor chains sandwiched between anion chains. The salts are metallic down to 100 K, followed by an onset of a metal-insulator (M-I) transition. TMI becomes lowered at high pressures (21 K at P > 11 kbar). The magnetic susceptibility suggests the presence of ferromagnetic interactions (J∼20K) between localized magnetic moments of M(mnt)2-, which interact with conduction electrons. The origin of ferromagnetic interactions is explained by McConnell's first model and small overlaps between SOMOs of M(mnt)2-.

KW - Ferromagnetic interaction

KW - Molecular magnet

KW - Organic metal

KW - π-d interaction

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DO - 10.1016/S0379-6779(02)00283-7

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SN - 0379-6779

VL - 133-134

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JO - Synthetic Metals

JF - Synthetic Metals

T2 - ISCOM 2001

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