An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution. Komaguchi, K., Iida, T., Goh, Y., Ohshita, J., Kunai, A., & Shiotani, M. Chemical Physics Letters, 387(4-6):327-331, 4, 2004.
![An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution [pdf]](https://bibbase.org/img/filetypes/pdf.svg "pdf")
Paper ![An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website abstract bibtex
Paper Website abstract bibtex Biradicals composed of two TEMPOs (2,2,6,6-tetramethylpiperidinol-oxyl) bridged with –(SiMe2)n– ðn ¼ 1–4Þ to each other were synthesized and subjected to an ESR study. A quintet spectrum of an isotropic 14N-hyperfine splitting of 21.6 MHz ðg ¼ 2:0070Þ was observed for biradical 1 ðn ¼ 1Þ and a triplet of 43.3 MHz ðg ¼ 2:0072Þ for biradical 4 ðn ¼ 4Þ in 3-methylpentane at 190 K. The Si- linkage was found to effectively enhance the spin–spin exchange interaction compared with the corresponding carbon fragments. The reversible temperature dependence of the spectra was analyzed based on a model of a modulated spin exchange interaction due to a tumbling motion. The apparent activation energies for the intramolecular dynamics were found to be 5.1–10.6 kJ mol?1 in 3-methylpentane and 2-methyltetrahydrofuran solutions.
@article{
title = {An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution},
type = {article},
year = {2004},
identifiers = {[object Object]},
pages = {327-331},
volume = {387},
websites = {http://linkinghub.elsevier.com/retrieve/pii/S0009261404002088},
month = {4},
id = {257f4942-90b6-3ac7-a3c1-5970210bbdfa},
created = {2016-06-01T13:42:36.000Z},
accessed = {2013-10-09},
file_attached = {true},
profile_id = {b6f9c4df-8fcf-310e-b786-d8f80309cb86},
group_id = {afa14129-4fe2-3a37-b52b-20fb6a1f9e0d},
last_modified = {2017-03-14T16:52:01.803Z},
read = {true},
starred = {false},
authored = {false},
confirmed = {true},
hidden = {false},
private_publication = {false},
abstract = {Biradicals composed of two TEMPOs (2,2,6,6-tetramethylpiperidinol-oxyl) bridged with –(SiMe2)n– ðn ¼ 1–4Þ to each other were synthesized and subjected to an ESR study. A quintet spectrum of an isotropic 14N-hyperfine splitting of 21.6 MHz ðg ¼ 2:0070Þ was observed for biradical 1 ðn ¼ 1Þ and a triplet of 43.3 MHz ðg ¼ 2:0072Þ for biradical 4 ðn ¼ 4Þ in 3-methylpentane at 190 K. The Si- linkage was found to effectively enhance the spin–spin exchange interaction compared with the corresponding carbon fragments. The reversible temperature dependence of the spectra was analyzed based on a model of a modulated spin exchange interaction due to a tumbling motion. The apparent activation energies for the intramolecular dynamics were found to be 5.1–10.6 kJ mol?1 in 3-methylpentane and 2-methyltetrahydrofuran solutions.},
bibtype = {article},
author = {Komaguchi, Kenji and Iida, Toshiyuki and Goh, Yumiko and Ohshita, Joji and Kunai, Atsutaka and Shiotani, Masaru},
journal = {Chemical Physics Letters},
number = {4-6}
}Downloads: 0
{"_id":"AgCD6DgCqtwfogu8f","bibbaseid":"komaguchi-iida-goh-ohshita-kunai-shiotani-anesrstudyofdynamicbiradicalsoftwotemposbridgedwithsime2nn14inliquidsolution-2004","downloads":0,"creationDate":"2018-10-18T18:32:40.786Z","title":"An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution","author_short":["Komaguchi, K.","Iida, T.","Goh, Y.","Ohshita, J.","Kunai, A.","Shiotani, M."],"year":2004,"bibtype":"article","biburl":null,"bibdata":{"title":"An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution","type":"article","year":"2004","identifiers":"[object Object]","pages":"327-331","volume":"387","websites":"http://linkinghub.elsevier.com/retrieve/pii/S0009261404002088","month":"4","id":"257f4942-90b6-3ac7-a3c1-5970210bbdfa","created":"2016-06-01T13:42:36.000Z","accessed":"2013-10-09","file_attached":"true","profile_id":"b6f9c4df-8fcf-310e-b786-d8f80309cb86","group_id":"afa14129-4fe2-3a37-b52b-20fb6a1f9e0d","last_modified":"2017-03-14T16:52:01.803Z","read":"true","starred":false,"authored":false,"confirmed":"true","hidden":false,"private_publication":false,"abstract":"Biradicals composed of two TEMPOs (2,2,6,6-tetramethylpiperidinol-oxyl) bridged with –(SiMe2)n– ðn ¼ 1–4Þ to each other were synthesized and subjected to an ESR study. A quintet spectrum of an isotropic 14N-hyperfine splitting of 21.6 MHz ðg ¼ 2:0070Þ was observed for biradical 1 ðn ¼ 1Þ and a triplet of 43.3 MHz ðg ¼ 2:0072Þ for biradical 4 ðn ¼ 4Þ in 3-methylpentane at 190 K. The Si- linkage was found to effectively enhance the spin–spin exchange interaction compared with the corresponding carbon fragments. The reversible temperature dependence of the spectra was analyzed based on a model of a modulated spin exchange interaction due to a tumbling motion. The apparent activation energies for the intramolecular dynamics were found to be 5.1–10.6 kJ mol?1 in 3-methylpentane and 2-methyltetrahydrofuran solutions.","bibtype":"article","author":"Komaguchi, Kenji and Iida, Toshiyuki and Goh, Yumiko and Ohshita, Joji and Kunai, Atsutaka and Shiotani, Masaru","journal":"Chemical Physics Letters","number":"4-6","bibtex":"@article{\n title = {An ESR study of dynamic biradicals of two TEMPOs bridged with –(SiMe2)n– (n=1–4) in liquid solution},\n type = {article},\n year = {2004},\n identifiers = {[object Object]},\n pages = {327-331},\n volume = {387},\n websites = {http://linkinghub.elsevier.com/retrieve/pii/S0009261404002088},\n month = {4},\n id = {257f4942-90b6-3ac7-a3c1-5970210bbdfa},\n created = {2016-06-01T13:42:36.000Z},\n accessed = {2013-10-09},\n file_attached = {true},\n profile_id = {b6f9c4df-8fcf-310e-b786-d8f80309cb86},\n group_id = {afa14129-4fe2-3a37-b52b-20fb6a1f9e0d},\n last_modified = {2017-03-14T16:52:01.803Z},\n read = {true},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {Biradicals composed of two TEMPOs (2,2,6,6-tetramethylpiperidinol-oxyl) bridged with –(SiMe2)n– ðn ¼ 1–4Þ to each other were synthesized and subjected to an ESR study. A quintet spectrum of an isotropic 14N-hyperfine splitting of 21.6 MHz ðg ¼ 2:0070Þ was observed for biradical 1 ðn ¼ 1Þ and a triplet of 43.3 MHz ðg ¼ 2:0072Þ for biradical 4 ðn ¼ 4Þ in 3-methylpentane at 190 K. The Si- linkage was found to effectively enhance the spin–spin exchange interaction compared with the corresponding carbon fragments. The reversible temperature dependence of the spectra was analyzed based on a model of a modulated spin exchange interaction due to a tumbling motion. The apparent activation energies for the intramolecular dynamics were found to be 5.1–10.6 kJ mol?1 in 3-methylpentane and 2-methyltetrahydrofuran solutions.},\n bibtype = {article},\n author = {Komaguchi, Kenji and Iida, Toshiyuki and Goh, Yumiko and Ohshita, Joji and Kunai, Atsutaka and Shiotani, Masaru},\n journal = {Chemical Physics Letters},\n number = {4-6}\n}","author_short":["Komaguchi, K.","Iida, T.","Goh, Y.","Ohshita, J.","Kunai, A.","Shiotani, M."],"urls":{"Paper":"https://bibbase.org/service/mendeley/b6f9c4df-8fcf-310e-b786-d8f80309cb86/file/52873e35-b05f-f029-6b0b-5ef6479a8d66/2004-An_ESR_study_of_dynamic_biradicals_of_two_TEMPOs_bridged_with_(SiMe2)n_(n14)_in_liquid_solution.pdf.pdf","Website":"http://linkinghub.elsevier.com/retrieve/pii/S0009261404002088"},"bibbaseid":"komaguchi-iida-goh-ohshita-kunai-shiotani-anesrstudyofdynamicbiradicalsoftwotemposbridgedwithsime2nn14inliquidsolution-2004","role":"author","downloads":0},"search_terms":["esr","study","dynamic","biradicals","two","tempos","bridged","sime2","liquid","solution","komaguchi","iida","goh","ohshita","kunai","shiotani"],"keywords":[],"authorIDs":[]}