期刊
RSC ADVANCES
卷 11, 期 32, 页码 19902-19907出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra02159a
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资金
- Russian Foundation for Basic Research [19-29-08005]
- Russian Science Foundation [17-13-01022]
- Russian Science Foundation [17-13-01022] Funding Source: Russian Science Foundation
The properties of spin-labeled cyhretrenes with nitronyl nitroxide and imino nitroxide substitutions were studied, revealing that their high kinetic stability makes them promising candidates for the creation of multifunctional contrast agents.
Spin-labeled cyrhetrenes [(NNCp)Re(CO)(3)] and [(INCp)Re(CO)(3)], where NNCp is nitronyl nitroxide 2-(eta(5)-cycIopentadienyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazoIe-3-oxide-1-oxyl and INCp is the corresponding imino nitroxide, were synthesized and characterized by EPR, CV, XRD, magnetochemistry and quantum chemistry methods. The correlations between different arrangements of paramagnetic centers and the magnetic exchange interactions for three poIymorphs of [(NNCp)Re(CO)(3)] were studied. It was concluded that high kinetic stability of nitroxide-substituted cyrhetrenes is a promising feature of compounds for the creation of multifunctional contrast agents.
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