THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS
Magnetic susceptibility and EPR measurements are reported for 21 osmium clusters containing between 3 and 40 osmium atoms and an even number of electrons. Clusters of nuclearity lower than ten are diamagnetic, having temperature-independent magnetic susceptibilities and no EPR spectra. All those hav...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1987
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| _version_ | 1797104368915316736 |
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| author | Drake, S Edwards, P Johnson, B Lewis, J Marseglia, E Obertelli, S Pyper, N |
| author_facet | Drake, S Edwards, P Johnson, B Lewis, J Marseglia, E Obertelli, S Pyper, N |
| author_sort | Drake, S |
| collection | OXFORD |
| description | Magnetic susceptibility and EPR measurements are reported for 21 osmium clusters containing between 3 and 40 osmium atoms and an even number of electrons. Clusters of nuclearity lower than ten are diamagnetic, having temperature-independent magnetic susceptibilities and no EPR spectra. All those having higher nuclearities (≫ 10) are paramagnetic, showing an EPR spectrum and a temperature-dependent susceptibility following Curie law behaviour. A molecular-orbital framework for understanding the electronic structures of clusters having nuclearities from two to infinity is presented and used to explain the emergence of the spontaneous paramagnetism in the larger clusters as well as its absence in the bulk metal. © 1987. |
| first_indexed | 2024-03-07T06:32:51Z |
| format | Journal article |
| id | oxford-uuid:f69bfa12-2d23-4559-b9ef-219fa3e538e1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:32:51Z |
| publishDate | 1987 |
| record_format | dspace |
| spelling | oxford-uuid:f69bfa12-2d23-4559-b9ef-219fa3e538e12022-03-27T12:36:18ZTHE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f69bfa12-2d23-4559-b9ef-219fa3e538e1EnglishSymplectic Elements at Oxford1987Drake, SEdwards, PJohnson, BLewis, JMarseglia, EObertelli, SPyper, NMagnetic susceptibility and EPR measurements are reported for 21 osmium clusters containing between 3 and 40 osmium atoms and an even number of electrons. Clusters of nuclearity lower than ten are diamagnetic, having temperature-independent magnetic susceptibilities and no EPR spectra. All those having higher nuclearities (≫ 10) are paramagnetic, showing an EPR spectrum and a temperature-dependent susceptibility following Curie law behaviour. A molecular-orbital framework for understanding the electronic structures of clusters having nuclearities from two to infinity is presented and used to explain the emergence of the spontaneous paramagnetism in the larger clusters as well as its absence in the bulk metal. © 1987. |
| spellingShingle | Drake, S Edwards, P Johnson, B Lewis, J Marseglia, E Obertelli, S Pyper, N THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS |
| title | THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS |
| title_full | THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS |
| title_fullStr | THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS |
| title_full_unstemmed | THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS |
| title_short | THE EMERGENCE OF PARAMAGNETISM IN TRANSITION-METAL CARBONYL CLUSTERS |
| title_sort | emergence of paramagnetism in transition metal carbonyl clusters |
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