Unexpected isotopic effect of a deuteriumed countercation on the spin-Peierls-type transitions in quasi-one-dimensional bis(maleonitriledithiolato)nickelate monoanion spin systems

Guo Jun Yuan; Shun Ping Zhao; Can Wang; Xiao Ming Ren; Jian Lan Liu

doi:10.1039/c1cc12221e

Unexpected isotopic effect of a deuteriumed countercation on the spin-Peierls-type transitions in quasi-one-dimensional bis(maleonitriledithiolato)nickelate monoanion spin systems

Guo Jun Yuan, Shun Ping Zhao, Can Wang, Xiao Ming Ren, Jian Lan Liu

School of Chemistry and Moleculai Engineering

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

19 Scopus citations

Abstract

Two deuteriumed quasi-one-dimensional (quasi-1D) spin-Peierls-type compounds, 4-X-benzylpyridinium-d₅ bis(maleo-nitriledithiolato) nickelate (the substituent X = Br or Cl), were structurally characterized. Compared with the corresponding non-deuteration compounds, the transition temperature T_C shifts to higher temperature. The isotopic effect of countercations on T_C is probably related to the change of phonon frequency ω₀ and 'chemical pressure' resulted from the substitution of pyridine by pyridine-d₅.

Original language	English
Pages (from-to)	9489-9491
Number of pages	3
Journal	Chemical Communications
Volume	47
Issue number	33
DOIs	https://doi.org/10.1039/c1cc12221e
State	Published - 7 Sep 2011

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title = "Unexpected isotopic effect of a deuteriumed countercation on the spin-Peierls-type transitions in quasi-one-dimensional bis(maleonitriledithiolato)nickelate monoanion spin systems",

abstract = "Two deuteriumed quasi-one-dimensional (quasi-1D) spin-Peierls-type compounds, 4-X-benzylpyridinium-d5 bis(maleo-nitriledithiolato) nickelate (the substituent X = Br or Cl), were structurally characterized. Compared with the corresponding non-deuteration compounds, the transition temperature TC shifts to higher temperature. The isotopic effect of countercations on TC is probably related to the change of phonon frequency ω0 and 'chemical pressure' resulted from the substitution of pyridine by pyridine-d5.",

author = "Yuan, {Guo Jun} and Zhao, {Shun Ping} and Can Wang and Ren, {Xiao Ming} and Liu, {Jian Lan}",

year = "2011",

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Unexpected isotopic effect of a deuteriumed countercation on the spin-Peierls-type transitions in quasi-one-dimensional bis(maleonitriledithiolato)nickelate monoanion spin systems. / Yuan, Guo Jun; Zhao, Shun Ping; Wang, Can et al.
In: Chemical Communications, Vol. 47, No. 33, 07.09.2011, p. 9489-9491.

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

TY - JOUR

T1 - Unexpected isotopic effect of a deuteriumed countercation on the spin-Peierls-type transitions in quasi-one-dimensional bis(maleonitriledithiolato)nickelate monoanion spin systems

AU - Yuan, Guo Jun

AU - Zhao, Shun Ping

AU - Wang, Can

AU - Ren, Xiao Ming

AU - Liu, Jian Lan

PY - 2011/9/7

Y1 - 2011/9/7

N2 - Two deuteriumed quasi-one-dimensional (quasi-1D) spin-Peierls-type compounds, 4-X-benzylpyridinium-d5 bis(maleo-nitriledithiolato) nickelate (the substituent X = Br or Cl), were structurally characterized. Compared with the corresponding non-deuteration compounds, the transition temperature TC shifts to higher temperature. The isotopic effect of countercations on TC is probably related to the change of phonon frequency ω0 and 'chemical pressure' resulted from the substitution of pyridine by pyridine-d5.

AB - Two deuteriumed quasi-one-dimensional (quasi-1D) spin-Peierls-type compounds, 4-X-benzylpyridinium-d5 bis(maleo-nitriledithiolato) nickelate (the substituent X = Br or Cl), were structurally characterized. Compared with the corresponding non-deuteration compounds, the transition temperature TC shifts to higher temperature. The isotopic effect of countercations on TC is probably related to the change of phonon frequency ω0 and 'chemical pressure' resulted from the substitution of pyridine by pyridine-d5.

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SN - 1359-7345

VL - 47

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JO - Chemical Communications

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IS - 33

ER -

Unexpected isotopic effect of a deuteriumed countercation on the spin-Peierls-type transitions in quasi-one-dimensional bis(maleonitriledithiolato)nickelate monoanion spin systems

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