Reversible iodine absorption by alkali-TCNQ salts with associated changes in physical properties
Reversible iodine absorption by alkali-TCNQ salts with associated changes in physical properties
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DOI：
10.1039/c2jm16821a
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发表时间：
2012-04
影响因子：
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通讯作者：
A. Funabiki;T. Mochida;Kazuyuki Takahashi;H. Mori;T. Sakurai;H. Ohta;M. Uruichi
中科院分区：
文献类型：
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作者：
A. Funabiki;T. Mochida;Kazuyuki Takahashi;H. Mori;T. Sakurai;H. Ohta;M. Uruichi
7,7′,8,8′-四氰基醌二甲烷 (TCNQ) 的碱金属盐可逆地吸收碘，形成三元盐 M(TCNQ)I (M = Li、Na、K) 和 M2(TCNQ)3I2 (M = Rb)。三元盐也可通过TCNQ与碱金属碘化物的固相反应获得。这些盐是顺磁性的，并且对于压实颗粒具有高电导率，~10−1 S cm−1，而 TCNQ 的碱金属盐是抗磁性绝缘体。三元盐进一步吸收碘，得到过掺杂盐M(TCNQ)In（n ≈ 6，M = Na，K），逐渐释放碘，得到M(TCNQ)I。相反，F4TCNQ和碘化钠的固态反应生成Na(F4TCNQ)，其不表现出碘吸收。
Alkali metal salts of 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) reversibly absorb iodine forming the ternary salts M(TCNQ)I (M = Li, Na, K) and M2(TCNQ)3I2 (M = Rb). The ternary salts are also obtained by solid-state reactions of TCNQ with alkali iodides. These salts are paramagnetic and have high electrical conductivities, ∼10−1 S cm−1, for compacted pellets, whereas the alkali metal salts of TCNQ are diamagnetic insulators. The ternary salts further absorb iodine to give over-doped salts M(TCNQ)In (n ≈ 6, M = Na, K), which gradually release iodine to give M(TCNQ)I. In contrast, the solid-state reaction of F4TCNQ and sodium iodide produces Na(F4TCNQ), which does not exhibit iodine absorption.