| Abstract
| - The monoclinic (I) and triclinic (II) crystalline forms of ferrocene dicarboxylic acid [FeII(η5-C5H4COOH)2] have been employed in solid−gas reactions at room temperature with the gaseous bases NH3, NH2(CH3), and NH(CH3)2, showing that the two crystal forms behave in exactly the same way in the solid−gas reaction, generating the same products, which, upon base removal, revert exclusively to crystalline form I. Starting materials and products have been investigated by single-crystal and powder diffraction and by 13C and 15N CPMAS methods.
- Crystalline form I (monoclinic) and form II (triclinic) of ferrocene dicarboxylic acid [Fe(η5-C5H4COOH)2] have been employed in solid−gas reactions at room temperature with the gaseous bases NH3,NH2(CH3), and NH(CH3)2. The two crystal forms behave in exactly the same way in the solid−gasreaction, generating the same products, identified as the anhydrous crystalline salts [NH4]2[Fe(η5-C5H4COO)2] (1), [NH3CH3]2[Fe(η5-C5H4COO)2] (2), and [NH2(CH3)2]2[Fe(η5-C5H4COO)2] (3). Interestinglythough, all these crystals revert via vapor release exclusively to the metastable crystalline form I. Startingmaterials and products have been investigated by single-crystal and powder diffraction and by 13C, 15NCPMAS and 1H MAS methods.
|
