The NQR Observation of Spin-Peierls Transition in an Antiferromagnetic MX-Chain Complex [NiBr(chxn)2]Br2

Shinya Takaishi; Yasuhiro Tobu; Hiroshi Kitagawa; Atsushi Goto; Tadashi Shimizu; Takashi Okubo; Tadaoki Mitani; Ryuichi Ikeda

doi:10.1021/ja039857x

The NQR Observation of Spin-Peierls Transition in an Antiferromagnetic MX-Chain Complex [NiBr(chxn)₂]Br₂

Shinya Takaishi, Yasuhiro Tobu, Hiroshi Kitagawa, Atsushi Goto, Tadashi Shimizu, Takashi Okubo, Tadaoki Mitani, Ryuichi Ikeda

SCI - Chemistry

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

51 Citations (Scopus)

Abstract

⁸¹Br Nuclear quadrupole resonance (NQR) measurement was performed in an S = 1/2 one-dimensional Heisenberg antiferromagnetic metal complex [NiBr(chxn)₂]Br₂ (chxn: 1R,2R-diaminocyclohexane), having a halogen-bridged MX chain structure -Br-Ni³⁺-Br-Ni³⁺-Br-. Two ⁸¹Br NQR signals were observed below 40 K, while a single signal was observed above 130 K, showing the presence of two nonequivalent bridging Br sites below 40 K. This NQR result together with previously reported magnetic susceptibility and X-ray results indicate the occurrence of a transition into a spin-Peierls state between 40 and 130 K. This communication reports the first spin-Peierls transition in metal complexes in which pure d electrons contribute to the magnetism. In addition, we demonstrated a new experimental method for studying a spin-Peierls system.

Original language	English
Pages (from-to)	1614-1615
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	126
Issue number	6
DOIs	https://doi.org/10.1021/ja039857x
Publication status	Published - 2004 Feb 18

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title = "The NQR Observation of Spin-Peierls Transition in an Antiferromagnetic MX-Chain Complex [NiBr(chxn)2]Br2",

abstract = "81Br Nuclear quadrupole resonance (NQR) measurement was performed in an S = 1/2 one-dimensional Heisenberg antiferromagnetic metal complex [NiBr(chxn)2]Br2 (chxn: 1R,2R-diaminocyclohexane), having a halogen-bridged MX chain structure -Br-Ni3+-Br-Ni3+-Br-. Two 81Br NQR signals were observed below 40 K, while a single signal was observed above 130 K, showing the presence of two nonequivalent bridging Br sites below 40 K. This NQR result together with previously reported magnetic susceptibility and X-ray results indicate the occurrence of a transition into a spin-Peierls state between 40 and 130 K. This communication reports the first spin-Peierls transition in metal complexes in which pure d electrons contribute to the magnetism. In addition, we demonstrated a new experimental method for studying a spin-Peierls system.",

author = "Shinya Takaishi and Yasuhiro Tobu and Hiroshi Kitagawa and Atsushi Goto and Tadashi Shimizu and Takashi Okubo and Tadaoki Mitani and Ryuichi Ikeda",

year = "2004",

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doi = "10.1021/ja039857x",

language = "English",

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T1 - The NQR Observation of Spin-Peierls Transition in an Antiferromagnetic MX-Chain Complex [NiBr(chxn)2]Br2

AU - Takaishi, Shinya

AU - Tobu, Yasuhiro

AU - Kitagawa, Hiroshi

AU - Goto, Atsushi

AU - Shimizu, Tadashi

AU - Okubo, Takashi

AU - Mitani, Tadaoki

AU - Ikeda, Ryuichi

PY - 2004/2/18

Y1 - 2004/2/18

N2 - 81Br Nuclear quadrupole resonance (NQR) measurement was performed in an S = 1/2 one-dimensional Heisenberg antiferromagnetic metal complex [NiBr(chxn)2]Br2 (chxn: 1R,2R-diaminocyclohexane), having a halogen-bridged MX chain structure -Br-Ni3+-Br-Ni3+-Br-. Two 81Br NQR signals were observed below 40 K, while a single signal was observed above 130 K, showing the presence of two nonequivalent bridging Br sites below 40 K. This NQR result together with previously reported magnetic susceptibility and X-ray results indicate the occurrence of a transition into a spin-Peierls state between 40 and 130 K. This communication reports the first spin-Peierls transition in metal complexes in which pure d electrons contribute to the magnetism. In addition, we demonstrated a new experimental method for studying a spin-Peierls system.

AB - 81Br Nuclear quadrupole resonance (NQR) measurement was performed in an S = 1/2 one-dimensional Heisenberg antiferromagnetic metal complex [NiBr(chxn)2]Br2 (chxn: 1R,2R-diaminocyclohexane), having a halogen-bridged MX chain structure -Br-Ni3+-Br-Ni3+-Br-. Two 81Br NQR signals were observed below 40 K, while a single signal was observed above 130 K, showing the presence of two nonequivalent bridging Br sites below 40 K. This NQR result together with previously reported magnetic susceptibility and X-ray results indicate the occurrence of a transition into a spin-Peierls state between 40 and 130 K. This communication reports the first spin-Peierls transition in metal complexes in which pure d electrons contribute to the magnetism. In addition, we demonstrated a new experimental method for studying a spin-Peierls system.

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JF - Journal of the American Chemical Society

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The NQR Observation of Spin-Peierls Transition in an Antiferromagnetic MX-Chain Complex [NiBr(chxn)₂]Br₂

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