Abstract
[Fe(bpp)2][BF4]2 (bpp = 2,6-di{pyrazol-1-yl}pyridine) derivatives with a bent geometry of hexadec-1-ynyl or hexadecyl pyrazole substituents are isomorphous, and high-spin at room temperature. However, only the latter compound undergoes an abrupt, stepwise spin-transition on cooling. This may reflect the different conformational flexibilities of their long chain substituents.
MeSH terms
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Alkanes / chemistry*
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Coordination Complexes / chemistry*
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Crystallography, X-Ray
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Ferrous Compounds / chemistry*
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Ligands
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Lipid Bilayers / chemistry*
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Models, Molecular
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Phase Transition
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Pyrazoles / chemistry*
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Pyridines / chemistry*
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Structure-Activity Relationship
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Transition Temperature
Substances
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2,6-di(1H-pyrazol-3-yl)pyridine
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Alkanes
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Coordination Complexes
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Ferrous Compounds
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Ligands
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Lipid Bilayers
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Pyrazoles
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Pyridines
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pyrazole
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n-hexadecane
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pyridine