Competing Na+ Solvation: Ether-Shared and Ether-Separated Triple Ions of Perylene Dianion

Bock, Hans; Naether, Christian; Havlas, Zdeněk

doi:10.1021/ja00118a024

Cited by 40 publications

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“…In particular, the mean lengths of C(2) À C(3) and C(8) À C(9) (1.341 ä) and C(4) À C(10') (1.421 ä) are considerably shorter than the analogous values in perylene (1.40 and 1.48 ä, respectively). A similar shortening of these bonds has been observed previously for the perylene dianion, in which the respective mean values are 1.37 and 1.43 ä, [24] as well as in the hydroxyperylenequinones constituting the cores of the hypocrellines.…”

Section: Resultssupporting

confidence: 85%

Tetraaminoperylenes: Their Efficient Synthesis and Physical Properties

et al. 2002

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Section: Resultssupporting

confidence: 85%

Tetraaminoperylenes: Their Efficient Synthesis and Physical Properties

et al. 2002

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“…Other CIP (G4) n :NaX crystal structures have also been reported. [26][27][28] The Na + cations in these structures are coordinated to a single anion and all five EOs of the G4 molecules with the G4 molecules adopting a crown ether-like (i.e., 15-crown-5) conformation.…”

Section: Resultsmentioning

confidence: 99%

Tetraglyme−Li⁺ Cation Solvate Structures: Models for Amorphous Concentrated Liquid and Polymer Electrolytes (II)

2003

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Three crystal structures of tetraglyme coordination complexes with lithium salts are reporteds(tetraglyme) 1 :LiAsF 6 , (tetraglyme) 1/2 :LiBF 4 , and (tetraglyme) 2/5 :LiCF 3 CO 2 . A novel form of six-coordinate Li + cation coordination by the ether oxygens is found resembling double-helix dimers. Structural characterization of these materials provides insight into the molecular interactions which occur among the cations, anions, and ether oxygens. Such interactions are of interest for aiding in the understanding of the many factors which contribute to ionic conductivity mechanisms in amorphous concentrated liquid and solid poly(ethylene oxide) electrolytes.

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“…On the basis of the similar chemical nature of congeners, a combination of glymes and Na salts should potentially form solvate ILs, and hence, they can be promising electrolytes for Na batteries. Unfortunately, there are few reports on the studies of glyme–Na salt mixtures. − Therefore, fundamental knowledge on these systems is insufficient for applying them as electrolytes. In particular, while phase diagrams usually provide fundamental and important information on the mixtures, there are no phase diagrams for the binary mixtures of glymes and Na salts.…”

Section: Introductionmentioning

confidence: 99%

“…Typical anions of ILs, such as bis(trifluoromethanesulfonyl)amide ([TFSA] − ), bis(fluorosulfonyl)amide ([FSA] − ), perchlorate (ClO 4 – ), and hexafluorophosphate (PF 6 – ), were selected as counteranions X (Figure ). On the basis of the preferential coordination number of 5–7 and stable complexation with certain crown ethers for Na + cation, − tetraglyme (G4) and pentaglyme (G5) with five and six oxygen atoms within a single molecule, respectively, were selected as ligands. A series of binary mixtures of these glymes and Na salts with different concentrations, [Na(glyme) n ][X], were prepared and investigated, focusing on the correlation between their composition and complex formation (phase diagrams).…”

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confidence: 99%

Phase Diagrams and Solvate Structures of Binary Mixtures of Glymes and Na Salts

et al. 2013

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We prepared a series of binary mixtures composed of selected Na salts and glymes (tetraglyme, G4, and pentaglyme, G5) with different salt concentrations and anionic species ([X](-): [N(SO2CF3)2](-) = [TFSA](-), [N(SO2F)2](-) = [FSA](-), ClO4(-), PF6(-)) and studied the effects of concentration, anionic structure, and glyme chain length on their phase diagrams and solvate structures. The phase diagrams clearly illustrate that all the mixtures form 1:1 complexes, [Na(G4 or G5)1][X]. The thermal stability of the equimolar mixtures was drastically improved in comparison with those of diluted systems, indicating that all the glyme molecules coordinate to Na(+) cations to form equimolar complexes. Single-crystal X-ray crystallography revealed that [Na(G5)1][X] forms characteristic solvate structures in the crystalline state irrespective of the paired anion species. A comparison of the solvate structures of the glyme-Na complexes with those of the glyme-Li complexes suggests that the ionic radii of the coordinated alkali-metal cations have substantial effects on the resulting solvate structures. The Raman bands of the complex cations were assigned by quantum chemical calculations. Concentration dependencies of cationic and anionic Raman spectra show good agreement with the corresponding phase diagrams. In addition, the Raman spectra of the 1:1 complexes strongly suggest that the glymes coordinate to Na(+) cation in the same way in both liquid and crystalline states. However, the aggregated structure in the crystalline state is broken by melting, which is accompanied by a change in the anion coordination.

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Competing Na+ Solvation: Ether-Shared and Ether-Separated Triple Ions of Perylene Dianion

Cited by 40 publications

References 0 publications

Tetraaminoperylenes: Their Efficient Synthesis and Physical Properties

Tetraaminoperylenes: Their Efficient Synthesis and Physical Properties

Tetraglyme−Li⁺ Cation Solvate Structures: Models for Amorphous Concentrated Liquid and Polymer Electrolytes (II)

Phase Diagrams and Solvate Structures of Binary Mixtures of Glymes and Na Salts

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Competing Na+ Solvation: Ether-Shared and Ether-Separated Triple Ions of Perylene Dianion

Cited by 40 publications

References 0 publications

Tetraaminoperylenes: Their Efficient Synthesis and Physical Properties

Tetraaminoperylenes: Their Efficient Synthesis and Physical Properties

Tetraglyme−Li+ Cation Solvate Structures: Models for Amorphous Concentrated Liquid and Polymer Electrolytes (II)

Phase Diagrams and Solvate Structures of Binary Mixtures of Glymes and Na Salts

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Tetraglyme−Li⁺ Cation Solvate Structures: Models for Amorphous Concentrated Liquid and Polymer Electrolytes (II)