Polymorphism and Magnetism of (cis-Cyclohexane-1,4-diammonium)(Dicyclohexano[18]crown-6)2[Ni(dmit)2]2 Salts
Polymorphism and Magnetism of (cis-Cyclohexane-1,4-diammonium)(Dicyclohexano[18]crown-6)2[Ni(dmit)2]2 Salts
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DOI：
10.1021/cg100826c
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发表时间：
2010-10
影响因子：
3.8
通讯作者：
Qiong Ye;T. Akutagawa;S. Noro;Takayoshi Nakamura;R. Xiong
中科院分区：
文献类型：
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作者：
Qiong Ye;T. Akutagawa;S. Noro;Takayoshi Nakamura;R. Xiong
将 (CHDA2+)(DCH[18]crown-6)2 的超分子阳离子结构引入 [Ni(dmit)2]− 盐中（其中 CHDA2+、DCH[18]crown-6 和 dmit2− 代表顺式环己烷-1,4-二铵、内消旋二环己基[18]冠-6， 分别为2-硫代-1,3-二硫醇-4,5-二硫醇）。同一结晶批次内的(CHDA2+)(DCH[18]crown-6)2[Ni(dmit)2]2(晶体1和2)的晶体多晶型物被分类在空间群P21/n(1)和P1(2)中。 CHDA2+ 阳离子的轴铵部分和赤道铵部分与 DCH[18]crown-6 的氧原子之间的 NH+∼O 氢键相互作用产生了 1 和 2 中超分子阳离子的夹心型 1:2 加合物。虽然 1 和 2 中的整体阳离子结构彼此相似，但 [Ni(dmit)2]− 阴离子排列彼此明显不同。在 1 中观察到沿阴离子短轴的横向 [Ni(dmit)2]− 二聚体，而在 2 中观察到两种类型的 [Ni(dmit)2]− π-二聚体。弱分子间...
Supramolecular cationic structures of (CHDA2+)(DCH[18]crown-6)2 were introduced into [Ni(dmit)2]− salts (where CHDA2+, DCH[18]crown-6, and dmit2− represent cis-cyclohexane-1,4-diammonium, meso-dicyclohexano[18]crown-6, and 2-thioxo-1,3-dithiole-4,5-dithiolate, respectively). The crystal polymorphs of (CHDA2+)(DCH[18]crown-6)2[Ni(dmit)2]2 (crystals 1 and 2) within the same crystallization batch were classified in the space groups P21/n (1) and P1 (2). The N−H+∼O hydrogen-bonding interactions between the axial- and equatorial-ammonium moieties of the CHDA2+ cation and the oxygen atoms of DCH[18]crown-6 yielded a sandwich-type 1:2 adduct of the supramolecular cation in 1 and 2. Although the overall cationic structures in 1 and 2 resembled one another, the [Ni(dmit)2]− anion arrangements were distinctively different from each other. The lateral [Ni(dmit)2]− dimer along the short axis of the anion was observed in 1, whereas two types of [Ni(dmit)2]− π-dimer existed independently in 2. The weak intermolecular ...