期刊
CRYSTAL GROWTH & DESIGN
卷 14, 期 11, 页码 5575-5584出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg500820v
关键词
-
资金
- Ministry of Education, Culture, Sports, Science and Technology, of Japan
- Grants-in-Aid for Scientific Research [26288029] Funding Source: KAKEN
A series of radical anion salts composed of 7,7,8,8-tetracyanoquinodimethane (TCNQ) and dications with -CnH2n- (n = 16) chains between two pyridinium rings are synthesized. The dication and TCNQ formed either 1:4 or 1:3 stoichiometries with no correlation between the composition and n. The 1:4 stoichiometry salts were obtained when n = 1, 3, 4, 5, 6, where TCNQ formed a one-dimensional column with either dimerization or tetramerization. In these salts, the individual dication length varied considerably, but the effective dication length (the distance between two adjacent dications in the lattice) was independent of n. For n = 1, solvent molecules were involved. However, the 1:4 stoichiometry could not be formed for n = 2 since an appropriate effective dication length could not be attained. The 1:3 stoichiometry salts were obtained when n = 2 and 6. In both crystals, TCNQ assembled into a trimer. For both stoichiometries, the crystals were moderately conducting (resistivity at room temperature: 10(-1)10(4) Omega cm) and had a semiconducting temperature dependence, demonstrating nonuniform TCNQ stacking. The charge-localized feature was revealed by the magnetic properties. All of the salts showed antiferromagnetic interactions between the localized spins with varying exchange interaction parameters, reflecting the structural features.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据