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https://hdl.handle.net/1959.11/1579
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Novak, M | en |
dc.contributor.author | Glover, Stephen | en |
dc.date.accessioned | 2009-05-15T14:39:00Z | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | Journal of the American Chemical Society, 126(25), p. 7748-7749 | en |
dc.identifier.issn | 1520-5126 | en |
dc.identifier.issn | 0002-7863 | en |
dc.identifier.issn | 1943-2984 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/1579 | - |
dc.description.abstract | Generation of the 4-biphenylyloxenium ion, "1a", from hydrolysis of 4-acetoxy-4-phenyl-2,5-cyclohexadienone, "2a", is demonstrated by common ion rate depression and azide trapping. The ion is less selective with a shorter lifetime (12 ns at 30°C) in aqueous solution than the corresponding nitrenium ion, "6a" (ca 0.3 μs at 30°C). Its lifetime is considerably longer than those of structurally related carbenium ions. Unlike "6a", "1a" reacts with N₃-, in part, at the distal ring to generate 4'-azido-4-hydroxybiphenyl, "5". These results are rationalized by calculations at the HF/6-31G* and pBP/DN*//HF/6-31G* levels that show that "1a" is planar but is less stable than "6a" relative to their hydration products by ca. 12 kcal/mol. The p-tolyloxenium ion, "1b", has not been unequivocally demonstrated to be formed in H₂O, but kinetic data show that it must be at least 10⁴-fold less stable than "1a" relative to their respective 4-acetoxy derivatives. It is also calculated to be ca. 19 kcal/mol less stable than the corresponding nitrenium ion, "6b", relative to their hydration products. | en |
dc.language | en | en |
dc.publisher | American Chemical Society | en |
dc.relation.ispartof | Journal of the American Chemical Society | en |
dc.title | Generation and Trapping of the 4-Biphenylyloxenium Ion by Water and Azide: Comparison with the 4-Biphenylylnitrenium Ion | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1021/ja047488e | en |
dc.subject.keywords | Physical Organic Chemistry | en |
local.contributor.firstname | M | en |
local.contributor.firstname | Stephen | en |
local.subject.for2008 | 030505 Physical Organic Chemistry | en |
local.subject.seo | 780103 Chemical sciences | en |
local.profile.school | School of Science and Technology | en |
local.profile.email | sglover@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | pes:1356 | en |
local.publisher.place | United States of America | en |
local.format.startpage | 7748 | en |
local.format.endpage | 7749 | en |
local.identifier.scopusid | 3042544490 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 126 | en |
local.identifier.issue | 25 | en |
local.title.subtitle | Comparison with the 4-Biphenylylnitrenium Ion | en |
local.contributor.lastname | Novak | en |
local.contributor.lastname | Glover | en |
dc.identifier.staff | une-id:sglover | en |
local.profile.orcid | 0000-0002-9344-8669 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:1638 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Generation and Trapping of the 4-Biphenylyloxenium Ion by Water and Azide | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Novak, M | en |
local.search.author | Glover, Stephen | en |
local.uneassociation | Unknown | en |
local.identifier.wosid | 000222217600009 | en |
local.year.published | 2004 | en |
Appears in Collections: | Journal Article School of Science and Technology |
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