6533b874fe1ef96bd12d602e

RESEARCH PRODUCT

Hexachlororhenate(IV) salts of organic radical cations

Francesc LloretRicardo GonzálezMiguel JulveDonatella ArmentanoCarlos KremerFrancisco M. RomeroDominique LuneauJuan FausGiovanni De Munno

subject

Nitroxide mediated radical polymerizationChemistryIntermolecular forceInorganic chemistryOxideIonic bondingCrystal structureAtmospheric temperature rangeInorganic ChemistryCrystallographychemistry.chemical_compoundMaterials ChemistryAntiferromagnetismPhysical and Theoretical ChemistryMethylpyridinium

description

Abstract The ionic salts ( p -rad) 2 [ReCl 6 ] ( 1 ) and ( m -rad) 2 [ReCl 6 ] ( 2 ) ( p / m -rad = 2-(4/3- N -methylpyridinium)-4,4,5,5-tetramethyl-4,5-dihydro-1 H -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 [ReCl 6 ] 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 1 and 2 have been investigated in the temperature range 2–300 K. Both compounds show weak but significant intermolecular antiferromagnetic interactions.

https://doi.org/10.1016/j.ica.2005.06.066