Electronic properties of novel donor-acceptor type charge transfer complexes, (BETS)2(X2TCNQ) (X = Cl, Br): 1H, 77Se and 13C-NMR

K. Hiraki; T. Takahashi; R. Kondo; S. Kagoshima; T. Hasegawa; T. Mochida; Y. Iwasa

doi:10.1016/S0379-6779(00)01048-1

Electronic properties of novel donor-acceptor type charge transfer complexes, (BETS)₂(X₂TCNQ) (X = Cl, Br): ¹H, ⁷⁷Se and ¹³C-NMR

K. Hiraki, T. Takahashi, R. Kondo, S. Kagoshima, T. Hasegawa, T. Mochida, Y. Iwasa

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

¹H, ¹³C and ⁷⁷Se NMR measurements were performed to investigate the electronic properties of (BETS)₂ (X₂TCNQ) (X=Cl, Br). The susceptibility was decomposed into the contributions of BETS and X₂TCNQ site. The line broadening of the ¹H/⁷⁷Se NMR spectra were observed in the Br²TCNQ complex at the metal insulator transition temperature, 12 K. Non magnetic spin singlet formation on the Br₂TCNQ site was observed at 80 K by ¹³C NMR. Line broadening of the ¹H NMR spectra were also observed in the Cl₂TCNQ complex at the metal insulator transition temperature. The insulating state of the Br and Cl₂TCNQ complexes under pressure are both magnetic. The holes on the BETS layers are relevant to the magnetic ordering.

Original language	English
Pages (from-to)	917-918
Number of pages	2
Journal	Synthetic Metals
Volume	120
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(00)01048-1
Publication status	Published - Mar 15 2001
Externally published	Yes

Keywords

Based on radical cation and/or anion salts
Metal-insulator phase transitions
Nuclear magnetic resonance spectroscopy
Organic conductors

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(00)01048-1

Cite this

@article{f671e57283744f1bad8fc1c2da2ff668,

title = "Electronic properties of novel donor-acceptor type charge transfer complexes, (BETS)2(X2TCNQ) (X = Cl, Br): 1H, 77Se and 13C-NMR",

abstract = "1H, 13C and 77Se NMR measurements were performed to investigate the electronic properties of (BETS)2 (X2TCNQ) (X=Cl, Br). The susceptibility was decomposed into the contributions of BETS and X2TCNQ site. The line broadening of the 1H/77Se NMR spectra were observed in the Br2TCNQ complex at the metal insulator transition temperature, 12 K. Non magnetic spin singlet formation on the Br2TCNQ site was observed at 80 K by 13C NMR. Line broadening of the 1H NMR spectra were also observed in the Cl2TCNQ complex at the metal insulator transition temperature. The insulating state of the Br and Cl2TCNQ complexes under pressure are both magnetic. The holes on the BETS layers are relevant to the magnetic ordering.",

keywords = "Based on radical cation and/or anion salts, Metal-insulator phase transitions, Nuclear magnetic resonance spectroscopy, Organic conductors",

author = "K. Hiraki and T. Takahashi and R. Kondo and S. Kagoshima and T. Hasegawa and T. Mochida and Y. Iwasa",

year = "2001",

month = mar,

day = "15",

doi = "10.1016/S0379-6779(00)01048-1",

language = "English",

volume = "120",

pages = "917--918",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

number = "1-3",

}

TY - JOUR

T1 - Electronic properties of novel donor-acceptor type charge transfer complexes, (BETS)2(X2TCNQ) (X = Cl, Br)

T2 - 1H, 77Se and 13C-NMR

AU - Hiraki, K.

AU - Takahashi, T.

AU - Kondo, R.

AU - Kagoshima, S.

AU - Hasegawa, T.

AU - Mochida, T.

AU - Iwasa, Y.

PY - 2001/3/15

Y1 - 2001/3/15

N2 - 1H, 13C and 77Se NMR measurements were performed to investigate the electronic properties of (BETS)2 (X2TCNQ) (X=Cl, Br). The susceptibility was decomposed into the contributions of BETS and X2TCNQ site. The line broadening of the 1H/77Se NMR spectra were observed in the Br2TCNQ complex at the metal insulator transition temperature, 12 K. Non magnetic spin singlet formation on the Br2TCNQ site was observed at 80 K by 13C NMR. Line broadening of the 1H NMR spectra were also observed in the Cl2TCNQ complex at the metal insulator transition temperature. The insulating state of the Br and Cl2TCNQ complexes under pressure are both magnetic. The holes on the BETS layers are relevant to the magnetic ordering.

AB - 1H, 13C and 77Se NMR measurements were performed to investigate the electronic properties of (BETS)2 (X2TCNQ) (X=Cl, Br). The susceptibility was decomposed into the contributions of BETS and X2TCNQ site. The line broadening of the 1H/77Se NMR spectra were observed in the Br2TCNQ complex at the metal insulator transition temperature, 12 K. Non magnetic spin singlet formation on the Br2TCNQ site was observed at 80 K by 13C NMR. Line broadening of the 1H NMR spectra were also observed in the Cl2TCNQ complex at the metal insulator transition temperature. The insulating state of the Br and Cl2TCNQ complexes under pressure are both magnetic. The holes on the BETS layers are relevant to the magnetic ordering.

KW - Based on radical cation and/or anion salts

KW - Metal-insulator phase transitions

KW - Nuclear magnetic resonance spectroscopy

KW - Organic conductors

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U2 - 10.1016/S0379-6779(00)01048-1

DO - 10.1016/S0379-6779(00)01048-1

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SN - 0379-6779

VL - 120

SP - 917

EP - 918

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

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