A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units

Pavel V. Petunin, Tatyana V. Rybalova, Marina E. Trusova, Mikhail N. Uvarov, Maxim S. Kazantsev, Evgeny A. Mostovich, Lars Postulka, Paul Eibisch, Bernd Wolf, Michael Lang, Pavel S. Postnikov, Martin Baumgarten

Результат исследования: Научные публикации в периодических изданияхстатья

Выдержка

An antiferromagnetically (AFM) coupled biradical based on oxoverdazyl and nitronylnitroxide was synthesized in 46 % yield using Sonogashira coupling. The obtained heterobiradical evidenced distinct properties of both radical entities in solution. Depending on the solvent, the prepared biradical crystallized in two different forms. SQUID magnetization measurements on Form II showed coupling constants JintraII/kB=−2.1 K and zJinterII/kB=−11.5 K. Consequently, total intermolecular exchange interactions are five times larger than the intramolecular ones. Further, DFT calculations explained this phenomenon and indicated the advantage of Form I for further in-depth investigations.

Язык оригиналаанглийский
Страницы (с-по)159-162
Число страниц4
ЖурналChemPlusChem
Том85
Номер выпуска1
Ранняя дата в режиме онлайн14 дек 2019
DOI
СостояниеОпубликовано - янв 2020

Отпечаток

SQUIDs
Exchange interactions
Discrete Fourier transforms
Magnetization

Цитировать

Petunin, Pavel V. ; Rybalova, Tatyana V. ; Trusova, Marina E. ; Uvarov, Mikhail N. ; Kazantsev, Maxim S. ; Mostovich, Evgeny A. ; Postulka, Lars ; Eibisch, Paul ; Wolf, Bernd ; Lang, Michael ; Postnikov, Pavel S. ; Baumgarten, Martin. / A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units. В: ChemPlusChem. 2020 ; Том 85, № 1. стр. 159-162.
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title = "A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units",
abstract = "An antiferromagnetically (AFM) coupled biradical based on oxoverdazyl and nitronylnitroxide was synthesized in 46 {\%} yield using Sonogashira coupling. The obtained heterobiradical evidenced distinct properties of both radical entities in solution. Depending on the solvent, the prepared biradical crystallized in two different forms. SQUID magnetization measurements on Form II showed coupling constants JintraII/kB=−2.1 K and zJinterII/kB=−11.5 K. Consequently, total intermolecular exchange interactions are five times larger than the intramolecular ones. Further, DFT calculations explained this phenomenon and indicated the advantage of Form I for further in-depth investigations.",
keywords = "antiferromagnetism, magnetic properties, multispin systems, radicals, Sonogashira coupling",
author = "Petunin, {Pavel V.} and Rybalova, {Tatyana V.} and Trusova, {Marina E.} and Uvarov, {Mikhail N.} and Kazantsev, {Maxim S.} and Mostovich, {Evgeny A.} and Lars Postulka and Paul Eibisch and Bernd Wolf and Michael Lang and Postnikov, {Pavel S.} and Martin Baumgarten",
note = "{\circledC} 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.",
year = "2020",
month = "1",
doi = "10.1002/cplu.201900709",
language = "English",
volume = "85",
pages = "159--162",
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Petunin, PV, Rybalova, TV, Trusova, ME, Uvarov, MN, Kazantsev, MS, Mostovich, EA, Postulka, L, Eibisch, P, Wolf, B, Lang, M, Postnikov, PS & Baumgarten, M 2020, 'A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units', ChemPlusChem, том. 85, № 1, стр. 159-162. https://doi.org/10.1002/cplu.201900709

A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units. / Petunin, Pavel V.; Rybalova, Tatyana V.; Trusova, Marina E.; Uvarov, Mikhail N.; Kazantsev, Maxim S.; Mostovich, Evgeny A.; Postulka, Lars; Eibisch, Paul; Wolf, Bernd; Lang, Michael; Postnikov, Pavel S.; Baumgarten, Martin.

В: ChemPlusChem, Том 85, № 1, 01.2020, стр. 159-162.

Результат исследования: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units

AU - Petunin, Pavel V.

AU - Rybalova, Tatyana V.

AU - Trusova, Marina E.

AU - Uvarov, Mikhail N.

AU - Kazantsev, Maxim S.

AU - Mostovich, Evgeny A.

AU - Postulka, Lars

AU - Eibisch, Paul

AU - Wolf, Bernd

AU - Lang, Michael

AU - Postnikov, Pavel S.

AU - Baumgarten, Martin

N1 - © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

PY - 2020/1

Y1 - 2020/1

N2 - An antiferromagnetically (AFM) coupled biradical based on oxoverdazyl and nitronylnitroxide was synthesized in 46 % yield using Sonogashira coupling. The obtained heterobiradical evidenced distinct properties of both radical entities in solution. Depending on the solvent, the prepared biradical crystallized in two different forms. SQUID magnetization measurements on Form II showed coupling constants JintraII/kB=−2.1 K and zJinterII/kB=−11.5 K. Consequently, total intermolecular exchange interactions are five times larger than the intramolecular ones. Further, DFT calculations explained this phenomenon and indicated the advantage of Form I for further in-depth investigations.

AB - An antiferromagnetically (AFM) coupled biradical based on oxoverdazyl and nitronylnitroxide was synthesized in 46 % yield using Sonogashira coupling. The obtained heterobiradical evidenced distinct properties of both radical entities in solution. Depending on the solvent, the prepared biradical crystallized in two different forms. SQUID magnetization measurements on Form II showed coupling constants JintraII/kB=−2.1 K and zJinterII/kB=−11.5 K. Consequently, total intermolecular exchange interactions are five times larger than the intramolecular ones. Further, DFT calculations explained this phenomenon and indicated the advantage of Form I for further in-depth investigations.

KW - antiferromagnetism

KW - magnetic properties

KW - multispin systems

KW - radicals

KW - Sonogashira coupling

UR - http://www.scopus.com/inward/record.url?scp=85077976247&partnerID=8YFLogxK

U2 - 10.1002/cplu.201900709

DO - 10.1002/cplu.201900709

M3 - Article

C2 - 31943893

AN - SCOPUS:85077976247

VL - 85

SP - 159

EP - 162

JO - ChemPlusChem

JF - ChemPlusChem

SN - 2192-6506

IS - 1

ER -