Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]

X. M. Ren; S. Nishihara; T. Akutagawa; S. Noro; T. Nakamura; W. Fujita; K. Awaga

doi:10.1016/j.cplett.2007.03.083

Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)₂]

X. M. Ren, S. Nishihara, T. Akutagawa, S. Noro, T. Nakamura, W. Fujita, K. Awaga

School of Chemistry and Moleculai Engineering

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

9 Scopus citations

Abstract

Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)₂] (RBzPy⁺ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt^2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at T_c ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)₂]^- anions and thus leading to enhancements of antiferromagnetic interactions.

Original language	English
Pages (from-to)	318-322
Number of pages	5
Journal	Chemical Physics Letters
Volume	439
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2007.03.083
State	Published - 11 May 2007

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title = "Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]",

abstract = "Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.",

author = "Ren, {X. M.} and S. Nishihara and T. Akutagawa and S. Noro and T. Nakamura and W. Fujita and K. Awaga",

year = "2007",

month = may,

day = "11",

doi = "10.1016/j.cplett.2007.03.083",

language = "英语",

volume = "439",

pages = "318--322",

journal = "Chemical Physics Letters",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]

AU - Ren, X. M.

AU - Nishihara, S.

AU - Akutagawa, T.

AU - Noro, S.

AU - Nakamura, T.

AU - Fujita, W.

AU - Awaga, K.

PY - 2007/5/11

Y1 - 2007/5/11

N2 - Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.

AB - Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.

UR - http://www.scopus.com/inward/record.url?scp=34247367574&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2007.03.083

DO - 10.1016/j.cplett.2007.03.083

M3 - 文章

AN - SCOPUS:34247367574

SN - 0009-2614

VL - 439

SP - 318

EP - 322

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-6

ER -

Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)₂]

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