{"title":"Structures of flexible supramolecular cations (1,4-cyclohexanediammonium2+)(crown ethers)2 in [Ni(dmit)2]− salts","authors":"T. Akutagawa, A. Hashimoto, S. Nishihara, T. Hasegawa, T. Nakamura","doi":"10.1016/S1472-7862(03)00007-8","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":100833,"journal":{"name":"Journal of Supramolecular Chemistry","volume":"2","pages":"175-186"},"PeriodicalIF":0.0000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1472-7862(03)00007-8","citationCount":"14","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Supramolecular Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1472786203000078","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 14
[Ni(dmit)2]−盐中柔性超分子阳离子(1,4-环己烷二铵2+)(冠醚)2的结构
超分子指示结构,(CHDA2+)(冠醚)和(CHDMA2+)(冠醚)配合物,作为反阳离子引入[Ni(dmit)2]−阴离子(S=1/2自旋)(CHDA2+=反式-1,4-环己烷二铵;CHDMA2+=1,4-双(甲基铵)环己烷;dmit2−=2-硫氧基-1,3-二硫基-4,5-二硫代物;冠醚=[12]冠-4、[15]冠-5或[18]冠-6)。环己烷环在反式-1,4-位具有–NH3+或–CH2–NH3+取代基,排列在[Ni(dmit)2]−盐内的冠醚络合物中。环己烷环采用椅状构象,通过阳离子的铵部分(–NH3+或–CH2–NH3+)和冠醚的氧原子之间的晶体内的N–H…O氢键相互作用,形成三明治型(CHDA2+或CHDMA2+)(冠醚)2结构。在所有盐中都观察到[Ni(dmit)2]−阴离子的π–π二聚体结构的形成。由于不同的环尺寸,指示结构(CHDA2+或CHDMA2+)和冠醚的选择可以影响晶体中[Ni(dmit)2]−阴离子的分子内和分子间相互作用。
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