Structures of flexible supramolecular cations (1,4-cyclohexanediammonium 2+)(crown ethers) 2 in [Ni(dmit) 2] - salts

T. Akutagawa; A. Hashimoto; S. Nishihara; T. Hasegawa; T. Nakamura

doi:10.1016/S1472-7862(03)00007-8

Structures of flexible supramolecular cations (1,4-cyclohexanediammonium ²⁺)(crown ethers) ₂ in [Ni(dmit) ₂] ^- salts

T. Akutagawa, A. Hashimoto, S. Nishihara, T. Hasegawa, T. Nakamura

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Supramolecular dication structures, (CHDA ²⁺)(crown ethers) and (CHDMA ²⁺)(crown ethers) complexes, were introduced as counter cations to [Ni(dmit) ₂] ^- anions (S=1/2 spin) (CHDA ²⁺=trans-1,4-cyclohexanediammonium; CHDMA ²⁺=1,4-bis(methylammonium)cyclohexane; dmit ^2-=2-thioxo-1,3-dithiole-4,5-dithiolate; crown ethers=[12]crown-4, [15]crown-5, or [18]crown-6). The cyclohexane rings, with the -NH ₃ ⁺ or -CH ₂-NH ₃ ⁺ substituents at trans-1,4-positions, arrange into the crown ethers complexes within the [Ni(dmit) ₂] ^- salts. The cyclohexane rings adopt chair conformations, resulting in sandwich-type (CHDA ²⁺ or CHDMA ²⁺)(crown ethers) ₂ structures, through N-H... O hydrogen-bonding interactions within the crystals between the ammonium moieties of cations (-NH ₃ ⁺ or -CH ₂-NH ₃ ⁺) and the oxygen atoms of the crown ethers. Formations of π-π dimer structures of [Ni(dmit) ₂] ^- anions were observed in all salts. The selections of the dication structures (CHDA ²⁺ or CHDMA ²⁺) and the crown ethers, due to the various ring sizes, can influence the intra and interdimer interactions of the [Ni(dmit) ₂] ^- anions in the crystals.

Original language	English
Pages (from-to)	175-186
Number of pages	12
Journal	Journal of Supramolecular Chemistry
Volume	2
Issue number	1-3
DOIs	https://doi.org/10.1016/S1472-7862(03)00007-8
Publication status	Published - 2002 Jan 1
Externally published	Yes

Keywords

Crown ether
Cyclohexane
Magnetism
Supramolecular cation
[Ni(dmit) ]

ASJC Scopus subject areas

Chemistry(all)
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/S1472-7862(03)00007-8

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@article{d9d084262dbe4d31b455f59faf5c1033,

title = "Structures of flexible supramolecular cations (1,4-cyclohexanediammonium 2+)(crown ethers) 2 in [Ni(dmit) 2] - salts",

abstract = "Supramolecular dication structures, (CHDA 2+)(crown ethers) and (CHDMA 2+)(crown ethers) complexes, were introduced as counter cations to [Ni(dmit) 2] - anions (S=1/2 spin) (CHDA 2+=trans-1,4-cyclohexanediammonium; CHDMA 2+=1,4-bis(methylammonium)cyclohexane; dmit 2-=2-thioxo-1,3-dithiole-4,5-dithiolate; crown ethers=[12]crown-4, [15]crown-5, or [18]crown-6). The cyclohexane rings, with the -NH 3 + or -CH 2-NH 3 + substituents at trans-1,4-positions, arrange into the crown ethers complexes within the [Ni(dmit) 2] - salts. The cyclohexane rings adopt chair conformations, resulting in sandwich-type (CHDA 2+ or CHDMA 2+)(crown ethers) 2 structures, through N-H... O hydrogen-bonding interactions within the crystals between the ammonium moieties of cations (-NH 3 + or -CH 2-NH 3 +) and the oxygen atoms of the crown ethers. Formations of π-π dimer structures of [Ni(dmit) 2] - anions were observed in all salts. The selections of the dication structures (CHDA 2+ or CHDMA 2+) and the crown ethers, due to the various ring sizes, can influence the intra and interdimer interactions of the [Ni(dmit) 2] - anions in the crystals.",

keywords = "Crown ether, Cyclohexane, Magnetism, Supramolecular cation, [Ni(dmit) ]",

author = "T. Akutagawa and A. Hashimoto and S. Nishihara and T. Hasegawa and T. Nakamura",

year = "2002",

month = jan,

day = "1",

doi = "10.1016/S1472-7862(03)00007-8",

language = "English",

volume = "2",

pages = "175--186",

journal = "Journal of Supramolecular Chemistry",

issn = "1472-7862",

publisher = "Elsevier BV",

number = "1-3",

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TY - JOUR

T1 - Structures of flexible supramolecular cations (1,4-cyclohexanediammonium 2+)(crown ethers) 2 in [Ni(dmit) 2] - salts

AU - Akutagawa, T.

AU - Hashimoto, A.

AU - Nishihara, S.

AU - Hasegawa, T.

AU - Nakamura, T.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Supramolecular dication structures, (CHDA 2+)(crown ethers) and (CHDMA 2+)(crown ethers) complexes, were introduced as counter cations to [Ni(dmit) 2] - anions (S=1/2 spin) (CHDA 2+=trans-1,4-cyclohexanediammonium; CHDMA 2+=1,4-bis(methylammonium)cyclohexane; dmit 2-=2-thioxo-1,3-dithiole-4,5-dithiolate; crown ethers=[12]crown-4, [15]crown-5, or [18]crown-6). The cyclohexane rings, with the -NH 3 + or -CH 2-NH 3 + substituents at trans-1,4-positions, arrange into the crown ethers complexes within the [Ni(dmit) 2] - salts. The cyclohexane rings adopt chair conformations, resulting in sandwich-type (CHDA 2+ or CHDMA 2+)(crown ethers) 2 structures, through N-H... O hydrogen-bonding interactions within the crystals between the ammonium moieties of cations (-NH 3 + or -CH 2-NH 3 +) and the oxygen atoms of the crown ethers. Formations of π-π dimer structures of [Ni(dmit) 2] - anions were observed in all salts. The selections of the dication structures (CHDA 2+ or CHDMA 2+) and the crown ethers, due to the various ring sizes, can influence the intra and interdimer interactions of the [Ni(dmit) 2] - anions in the crystals.

AB - Supramolecular dication structures, (CHDA 2+)(crown ethers) and (CHDMA 2+)(crown ethers) complexes, were introduced as counter cations to [Ni(dmit) 2] - anions (S=1/2 spin) (CHDA 2+=trans-1,4-cyclohexanediammonium; CHDMA 2+=1,4-bis(methylammonium)cyclohexane; dmit 2-=2-thioxo-1,3-dithiole-4,5-dithiolate; crown ethers=[12]crown-4, [15]crown-5, or [18]crown-6). The cyclohexane rings, with the -NH 3 + or -CH 2-NH 3 + substituents at trans-1,4-positions, arrange into the crown ethers complexes within the [Ni(dmit) 2] - salts. The cyclohexane rings adopt chair conformations, resulting in sandwich-type (CHDA 2+ or CHDMA 2+)(crown ethers) 2 structures, through N-H... O hydrogen-bonding interactions within the crystals between the ammonium moieties of cations (-NH 3 + or -CH 2-NH 3 +) and the oxygen atoms of the crown ethers. Formations of π-π dimer structures of [Ni(dmit) 2] - anions were observed in all salts. The selections of the dication structures (CHDA 2+ or CHDMA 2+) and the crown ethers, due to the various ring sizes, can influence the intra and interdimer interactions of the [Ni(dmit) 2] - anions in the crystals.

KW - Crown ether

KW - Cyclohexane

KW - Magnetism

KW - Supramolecular cation

KW - [Ni(dmit) ]

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U2 - 10.1016/S1472-7862(03)00007-8

DO - 10.1016/S1472-7862(03)00007-8

M3 - Article

AN - SCOPUS:0042627978

VL - 2

SP - 175

EP - 186

JO - Journal of Supramolecular Chemistry

JF - Journal of Supramolecular Chemistry

SN - 1472-7862

IS - 1-3

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