CRYSTAL STRUCTURE AND MAGNETIC MEASUREMENTS OF CIS-DICYANO-BIS (1,10-PHENANTHROLINE)IRON(III) SULFATE

Abstract

The structure of the solvatochromic complex cis-dicyano-bis(1,10-phenanthroline)iron(III) sulfate dihydrate was determined by X-ray diffraction. The complex crystallized in a compressed octahedral conformation with the cyanide ligands cis-bonded. The unit cell contains enantiomeric pairs of the compound with a network of sulfate ions and water molecules stabilized by hydrogen bonding. The magnetic moments of the perchlorate salt dissolved in both water and nonaqueous solvents were probed and found to be in accord with a solvated, low spin [Fe(III)(phen)₂(CN)₂]⁺ ion, (μ_exp = 2.0–2.6 BM, 298K), showing no dependence on the empirical solvent parameters AN, DN, E_T(30) and π?.