A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units

A Weakly Antiferromagnetically Coupled Biradical Combining Verdazyl with Nitronylnitroxide Units

Bibliographic Details
Parent link:	ChemPluscHhem Vol. 85, iss. 1.— 2019.— [P. 159-162]
Corporate Author:	Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра технологии органических веществ и полимерных материалов (ТОВПМ)
Other Authors:	Petunin P. V. Pavel Vasilievich, Rybalova T. A. Tatjyana Valerjevna, Trusova M. E. Marina Evgenievna, Uvarov M. N. Mikhail Nikolaevich, Kazantsev M. S. Maksim Sergeevich, Mostovich E. A. Evgeny Alekseevich, Postulka L. Lars, Eibisch P. Paul, Wolf B. Bernd, Lang M. Michael, Postnikov P. S. Pavel Sergeevich, Baumgarten M. Martin
Summary:	Title screen 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. Режим доступа: по договору с организацией-держателем ресурса
Published:	2019
Subjects:	электронный ресурс труды учёных ТПУ бирадикалы растворы обменные взаимодействия кристаллизация
Online Access:	https://doi.org/10.1002/cplu.201900709
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663832

Internet

https://doi.org/10.1002/cplu.201900709