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DC Field | Value | Language |
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dc.citation.endPage | 8976 | - |
dc.citation.number | 21 | - |
dc.citation.startPage | 8973 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY | - |
dc.citation.volume | 100 | - |
dc.contributor.author | Ruoff, RS | - |
dc.date.accessioned | 2023-12-22T12:39:31Z | - |
dc.date.available | 2023-12-22T12:39:31Z | - |
dc.date.created | 2021-10-19 | - |
dc.date.issued | 1996-05 | - |
dc.description.abstract | The enthalpy of formation (Delta H-f) of the ionic solid (NH4+)(3)C-60(3-) is assessed. The solid is found to be stable with respect to the standard state reactants (N-2(g), H-2(g), and C-60(s)), with a Delta H-f of -1.82 eV/mol. For comparison, this enthalpy of formation is less than the enthalpy of formation of, e.g., K3C60 (-6.27 eV/mol). There are several attractive features of (NH4+)(3)C-60(3-) as a new ionic solid and potential superconductor, if it can be synthesized. It is well-known that the size of the NH4+ cation is almost exactly the same as that of Rb+. Among the M(3)C(60) superconductors, Rb3C60 has the second highest superconducting transition temperature, with T-c = 28 K, which suggests that the T-c of a superconducting (NH4)(3)C-60 could be higher than yet achieved for C-60 superconductors, of which Cs3C60(s) has the highest T-c of 40 K. There is a 28% relative mass change when the NH4+ countercation is replaced by (ND4+)-N-15, which is a much larger relative change than can be achieved with the alkali metal atoms, which is important for study of the isotopic substitution effect on T-c. There is also the possibility of unique dynamics in which the ammonium ion rotates in the lattice; the presence of a molecular ion, rather than an atomic ion, could play a role in the mechanism of superconductivity, if the solid is superconducting. Finally, alternative methods to produce such an ammonium salt of C-60, such as electrosynthesis or direct synthesis in liquid ammonia, would be required in contrast to the method of the production of M(3)C(60) (M = alkali atom) based on vapor phase transport of M via sublimation in sealed tubes. | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY, v.100, no.21, pp.8973 - 8976 | - |
dc.identifier.doi | 10.1021/jp953151a | - |
dc.identifier.issn | 0022-3654 | - |
dc.identifier.scopusid | 2-s2.0-0007113196 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54536 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/jp953151a | - |
dc.identifier.wosid | A1996UM67700051 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | (NH4)(3)C-60: A new C-60 superconductor? | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ROTATIONAL SPECTRUM | - |
dc.subject.keywordPlus | CHLORIDE VAPOR | - |
dc.subject.keywordPlus | ALKALI-METAL | - |
dc.subject.keywordPlus | AMMONIA | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | KXC60 | - |
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