Unique structural and physical properties of Ni(dmit)2 anion radical salts characterized by short Te•••S contacts (dmit=1,3-dithiole-2-thione-4,5-dithiolate)

被引：11
作者：
Fujiwara, M
Kato, R
机构：
[1] RIKEN, Wako, Saitama 3510198, Japan
[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
来源：
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2002年 / 19期
关键词：
D O I：
10.1039/b203834j
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Five new Ni(dmit)(2) anion radical salts, [Me3Te][ Ni(dmit)(2)](2) (1), [Me3Te][ Ni(dmit)(2)](3).(CH3)(2) C(O) (2), alpha-[MOT] [ Ni(dmit)(2)](2) (3), beta-[MOT][Ni(dmit)(2)](2) (4), and gamma-[MOT][Ni(dmit)(2)](2) (5) (dmit = 1,3-dithiole-2-thione-4,5-dithiolate; MOT = 1-oxa-4-methyl-4-telluracyclohexane) have been prepared by galvanostatic electrolysis. X-Ray crystal structure analyses show that all the salts are characterized by short Te...S contacts (3.41-3.85 Angstrom) between the anions and cations. Each salt shows unique molecular packing of the Ni( dmit)(2) units. The electronic structures are strongly dependent on these unique molecular arrangements. Among them, 1 and 3 show metallic behavior (down to 60 and 160 K, respectively) and the resistivity of 4 is almost independent of temperature, increasing moderately below 40 K.
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页码：3763 / 3770
页数：8
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