Syntheses and spin-spin exchange interactions of calix[4]arene biradicals

Xiaojun Hu; Haijun Yang; Yong Li

doi:10.1016/j.saa.2007.12.012

Syntheses and spin-spin exchange interactions of calix[4]arene biradicals

Xiaojun Hu, Haijun Yang, Yong Li^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Three novel paramagnetic calix[4]arenes (2, 3 and 4) with two opposite nitroxide radicals on the upper rims were synthesized and characterized. The through-space spin-spin exchange interactions of these calixarene biradicals were investigated, and found to be affected by many factors, such as molecular conformational flexibility, steric hindrance, temperature, solvent effect and complexation of silver ion.

Original language	English
Pages (from-to)	439-444
Number of pages	6
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	70
Issue number	2
DOIs	https://doi.org/10.1016/j.saa.2007.12.012
Publication status	Published - Jul 2008
Externally published	Yes

Keywords

Calix[4]arene
ESR
Nitroxide biradical
Spin-spin exchange interaction

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10.1016/j.saa.2007.12.012

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abstract = "Three novel paramagnetic calix[4]arenes (2, 3 and 4) with two opposite nitroxide radicals on the upper rims were synthesized and characterized. The through-space spin-spin exchange interactions of these calixarene biradicals were investigated, and found to be affected by many factors, such as molecular conformational flexibility, steric hindrance, temperature, solvent effect and complexation of silver ion.",

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AU - Yang, Haijun

AU - Li, Yong

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N2 - Three novel paramagnetic calix[4]arenes (2, 3 and 4) with two opposite nitroxide radicals on the upper rims were synthesized and characterized. The through-space spin-spin exchange interactions of these calixarene biradicals were investigated, and found to be affected by many factors, such as molecular conformational flexibility, steric hindrance, temperature, solvent effect and complexation of silver ion.

AB - Three novel paramagnetic calix[4]arenes (2, 3 and 4) with two opposite nitroxide radicals on the upper rims were synthesized and characterized. The through-space spin-spin exchange interactions of these calixarene biradicals were investigated, and found to be affected by many factors, such as molecular conformational flexibility, steric hindrance, temperature, solvent effect and complexation of silver ion.

KW - Calix[4]arene

KW - ESR

KW - Nitroxide biradical

KW - Spin-spin exchange interaction

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M3 - Article

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AN - SCOPUS:44649134549

SN - 1386-1425

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JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

IS - 2

ER -

Syntheses and spin-spin exchange interactions of calix[4]arene biradicals

Abstract

Keywords

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