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

被引：18

作者：

Yuan, Guo-Jun ^{[1
,2
]}

Zhao, Shun-Ping ^{[1
,2
]}

Wang, Can ^{[1
,2
]}

Ren, Xiao-Ming ^{[1
,2
,3
,4
]}

Liu, Jian-Lan ^{[1
,2
]}

机构：

[1] Nanjing Univ Technol, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

[2] Nanjing Univ Technol, Coll Sci, Nanjing 210009, Peoples R China

[3] Nanjing Univ, Inst Coordinat Chem, Nanjing 210093, Peoples R China

[4] Nanjing Univ, State Key Lab, Nanjing 210093, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2011年 / 47卷 / 33期

关键词：

TEMPERATURE; BISTABILITY; MNT(2-);

D O I：

10.1039/c1cc12221e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two deuteriumed quasi-one-dimensional (quasi-1D) spin-Peierls-type compounds, 4-X-benzylpyridinium-d(5) 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 omega(0) and 'chemical pressure' resulted from the substitution of pyridine by pyridine-d(5).

引用

页码：9489 / 9491

页数：3

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