The ionic salts (p-rad)(2)[ReCl6] (1) and (m-rad)(2)[ReCl6] (2) (p/m-rad = 2-(4/3-N-methylpyridinium)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-N-oxide) have been prepared and their crystal structures determined by single-crystal X-ray diffraction. The nitronyl nitroxide cations in compound 1 show a layered disposition, whereas the [ReCl6](2-) units are placed between these layers. The nitronyl nitroxide cations in compound 2 adopt an hexagonal array but they do not result in layers. Bulk magnetic properties of I and 2 have been investigated in the temperature range 2-300 K. Both compounds show weak but significant intermolecular antiferromagnetic interactions.

Hexachlororhenate(IV) Salts of Organic Radical Cations

ARMENTANO, Donatella;G. DE MUNNO;
2005

Abstract

The ionic salts (p-rad)(2)[ReCl6] (1) and (m-rad)(2)[ReCl6] (2) (p/m-rad = 2-(4/3-N-methylpyridinium)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-N-oxide) have been prepared and their crystal structures determined by single-crystal X-ray diffraction. The nitronyl nitroxide cations in compound 1 show a layered disposition, whereas the [ReCl6](2-) units are placed between these layers. The nitronyl nitroxide cations in compound 2 adopt an hexagonal array but they do not result in layers. Bulk magnetic properties of I and 2 have been investigated in the temperature range 2-300 K. Both compounds show weak but significant intermolecular antiferromagnetic interactions.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/146825
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