Formation of a One-Dimensional Stacking Structure of π-Conjugated Nitroxyl Radical Bearing a 1,2,5-Thiadiazole Ring and Its Magnetic Property
Formation of a One-Dimensional Stacking Structure of π-Conjugated Nitroxyl Radical Bearing a 1,2,5-Thiadiazole Ring and Its Magnetic Property
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DOI：
10.1021/cg049599v
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发表时间：
2005-01
影响因子：
3.8
通讯作者：
M. Yao;Satoshi Asakura;M. Abe;H. Inoue;N. Yoshioka
中科院分区：
文献类型：
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作者：
M. Yao;Satoshi Asakura;M. Abe;H. Inoue;N. Yoshioka
一种新的稳定的有机自由基，7，7-二苯基-6，7-二氢[1，2，5]噻二唑并[3，4-f]喹啉-6-氧自由基（1），形成由滑移π堆积组成的一维柱状结构，这与等电子苯系物，3，3-二苯基-3，4-二氢苯并[f]喹啉-4-氧自由基（2）的二聚体形成相反。1的磁化率服从反铁磁链模型，J = −47 cm-1，而2即使在二聚体中也表现为孤立的双重自旋态。
A novel stable organic radical, 7,7-diphenyl-6,7-dihydro[1,2,5]thiadiazolo[3,4-f]quinoline-6-oxyl (1), forms a one-dimensional columnar structure consisting of slipped π-stacks, which is in contrast to dimer formation of the isoelectronic benzologue, 3,3-diphenyl-3,4-dihydrobenzo[f]quinoline-4-oxyl (2). Magnetic susceptibility of 1 obeyed an antiferromagnetic chain model with J = −47 cm-1, while 2 behaved as an isolated doublet spin state even in the dimer.