Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons
Radical cation and anion salts of the neutral organic radicals, 2-imidazolyl nitronyl nitroxide (2-IMNN) and 2-benzimidazolyl nitronyl nitroxide (2-BIMNN), have been prepared and their magnetic properties studied by SQUID magnetometry. The radical salts exhibit one-dimensional (1-d) antiferromagneti...
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| Format: | Conference item |
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2003
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| _version_ | 1797089823983403008 |
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| author | Sugano, T Blundell, S Hayes, W Day, P |
| author_facet | Sugano, T Blundell, S Hayes, W Day, P |
| author_sort | Sugano, T |
| collection | OXFORD |
| description | Radical cation and anion salts of the neutral organic radicals, 2-imidazolyl nitronyl nitroxide (2-IMNN) and 2-benzimidazolyl nitronyl nitroxide (2-BIMNN), have been prepared and their magnetic properties studied by SQUID magnetometry. The radical salts exhibit one-dimensional (1-d) antiferromagnetic (AFM) intermolecular interactions with the exchange coupling J/k between -0.8 and -6.3 K, which are significantly reduced from those observed in the two neutral radicals, while 2-IMNN shows an AFM interaction with J/k= -88 K within the molecular dimers and 2-BIMNN has quasi 1-d ferromagnetic (AFM) intermolecular interactions with J/k = +22 K (intrachain) and zJ'/k = +0.24 K (interchain). The magnetic properties of the nitronyl nitroxide and iminonitroxide derivatives having molecular structure related to 2-IMNN have also been investigated. In 2-benzimidazolyl iminonitroxide (2-BIMIN), the FM interaction observed in 2-BIMNN is replaced by strong 1-d AFM interaction with J/k = -11.7 K. (C) 2003 Elsevier Science Ltd. All rights reserved. |
| first_indexed | 2024-03-07T03:09:39Z |
| format | Conference item |
| id | oxford-uuid:b3bee82e-b00c-4156-bf73-f5c70b032f89 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:09:39Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:b3bee82e-b00c-4156-bf73-f5c70b032f892022-03-27T04:21:30ZMagnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbonsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:b3bee82e-b00c-4156-bf73-f5c70b032f89Symplectic Elements at Oxford2003Sugano, TBlundell, SHayes, WDay, PRadical cation and anion salts of the neutral organic radicals, 2-imidazolyl nitronyl nitroxide (2-IMNN) and 2-benzimidazolyl nitronyl nitroxide (2-BIMNN), have been prepared and their magnetic properties studied by SQUID magnetometry. The radical salts exhibit one-dimensional (1-d) antiferromagnetic (AFM) intermolecular interactions with the exchange coupling J/k between -0.8 and -6.3 K, which are significantly reduced from those observed in the two neutral radicals, while 2-IMNN shows an AFM interaction with J/k= -88 K within the molecular dimers and 2-BIMNN has quasi 1-d ferromagnetic (AFM) intermolecular interactions with J/k = +22 K (intrachain) and zJ'/k = +0.24 K (interchain). The magnetic properties of the nitronyl nitroxide and iminonitroxide derivatives having molecular structure related to 2-IMNN have also been investigated. In 2-benzimidazolyl iminonitroxide (2-BIMIN), the FM interaction observed in 2-BIMNN is replaced by strong 1-d AFM interaction with J/k = -11.7 K. (C) 2003 Elsevier Science Ltd. All rights reserved. |
| spellingShingle | Sugano, T Blundell, S Hayes, W Day, P Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
| title | Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
| title_full | Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
| title_fullStr | Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
| title_full_unstemmed | Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
| title_short | Magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
| title_sort | magnetism in organic radical ion salts based on nitronyl nitroxide derivatives substituted with heterocyclic aromatic hydrocarbons |
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